Abstract: Methods of operating a first endpoint device (ED) facilitate the making of a peer-to-peer (P2P) connection between the first ED and a second ED despite intervening network address translators (NATs) at both ends. The P2P connection extends across a system compliant with the internet protocol (IP) whose architecture that includes a first network (having at least the first ED and a first NAT), a second network (having at least the second ED and a second NAT) and a third network. The first ED connects to the third network via the first NAT while the second ED connects to the third network via the second NAT. A first such method includes: providing the second ED with the first IP-address/port pair; and providing the second ED with first type-information regarding the type of the first NAT.

Abstract: Methods of operating a first endpoint device (ED) facilitate the making of a peer-to-peer (P2P) connection between the first ED and a second ED despite intervening network address translators (NATs) at both ends. The P2P connection extends across a system compliant with the internet protocol (IP) whose architecture that includes a first network (having at least the first ED and a first NAT), a second network (having at least the second ED and a second NAT) and a third network. The first ED connects to the third network via the first NAT while the second ED connects to the third network via the second NAT. A first such method includes: providing the second ED with the first IP-address/port pair; and providing the second ED with first type-information regarding the type of the first NAT.

Abstract: Methods of operating a first endpoint device (ED) facilitate the making of a peer-to-peer (P2P) connection between the first ED and a second ED despite intervening network address translators (NATs) at both ends. The P2P connection extends across a system compliant with the internet protocol (IP) whose architecture that includes a first network (having at least the first ED and a first NAT), a second network (having at least the second ED and a second NAT) and a third network. The first ED connects to the third network via the first NAT while the second ED connects to the third network via the second NAT. A first such method includes: providing the second ED with the first IP-address/port pair; and providing the second ED with first type-information regarding the type of the first NAT.

Abstract: Methods of operating a first endpoint device (ED) facilitate the making of a peer-to-peer (P2P) connection between the first ED and a second ED despite intervening network address translators (NATs) at both ends. The P2P connection extends across a system compliant with the internet protocol (IP) whose architecture that includes a first network (having at least the first ED and a first NAT), a second network (having at least the second ED and a second NAT) and a third network. The first ED connects to the third network via the first NAT while the second ED connects to the third network via the second NAT. A first such method includes: providing the second ED with the first IP-address/port pair; and providing the second ED with first type-information regarding the type of the first NAT.

Abstract: A toothbrush with a liquid-storing sponge structure formed with a thickness diminishing to a pointed head which projects outwardly longitudinally from the bristle head. The sponge structure is in contacting engagement with the bristles whereby the stored liquid may be introduced into and along the rows of bristles. The sponge structure carries more liquid than the bristles alone and thereby generates a cleansing foam to the teeth.

Abstract: A sanitary, hygienic dental/oral appliance synergistically combining six functions in one device to conveniently and even disposably provide for complete dental/oral hygiene in a portable package. A complete dental/oral hygiene device comprising a hypotraumatic (non-abrasive), large working/brushing-surface headpiece mounted upon a shaft. The shaft proximal end is adapted for scraping and stain removing. A flexible toothpick mounted upon the shaft as well as a measure of dental floss with a cover to hold the floss in place. Also described as a fibro-cellular (spongy), bristle-free, first absorbent toothbrush, preimpregnated with fluoride gel/toothpaste, combined with a novel "winged toothpick", dental floss, stain scraper & gum/teeth stimulator/vibrator tips, for easy-to-use, economically very pleasant, pain-free, comprehensive & complete dental/oral hygiene program.

Abstract: Disclosed are culture media comprising a gelling agent, germicidal bleach containing a halogen, a halogen-inactivating agent to inactivate residual halogen and conventional nutrients.Also disclosed is a method for sterilizing a culture medium without autoclaving same by dissolving a gelling agent in buffered water; adding thereto a germicidal bleach containing a halogen; thereby forming a suspension; heating the suspension to boiling; adding to the stirred and heated suspension an excess of halogen-inactivating agent to neutralize residual halogen and then adding nutrients.

Abstract: Apparatus for the culture of aerobic, anaerobic organisms and tissue which is formed of two sections, one fitting with the other as a cover and has a lubricated open cell foam filter gasket having on one side a microporous membrane and on the other, a non-porous layer. The gasket is fitted to the cover section or onto the rim of the container section and minimizes the chances of contamination from the ambient or otherwise gaseous atmosphere of incubation of the culture or biological material contained therein when closed and/or in use.

Abstract: Disclosed are culture media comprising an aqueous solution of a gelling agent, a compound such as a bleach capable of sterilizing the gelling agent and its container.Also disclosed is a method for sterilizing a culture medium without autoclaving same by dissolving a gelling agent in boiling water; adding cool water to the aqueous gelling agent solution; dissolving a sterilizing agent in the cooled solution adding nutrients and then growing the culture.