Middle ear ventilation tube
Description
FIG. 1 is a top perspective view of a middle ear ventilation tube embodying the new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a perspective view taken in the direction of the arrow 5 of FIG. 3;
FIG. 6 is a top perspective view of a second embodiment of a middle ear ventilation tube embodying the new design;
FIG. 7 is an enlarged bottom perspective view of the embodiment of FIG. 5; and
FIG. 8 is a side elevational view of the embodiment of FIG. 5.
The front elevational view of FIG. 4 and the perspective view of FIG. 5 are also illustrative of the embodiment of FIGS. 6-8.
Referenced Cited
U.S. Patent Documents
Other references
D224672 | August 1972 | Geraci |
D239330 | March 1976 | Shea, Jr. |
886790 | May 1908 | Frank |
3530860 | September 1970 | Majoros |
3645268 | February 1972 | Capote |
3807409 | April 1974 | Paparella et al. |
3871380 | March 1975 | Heros |
3888258 | June 1975 | Akiyama |
3913584 | October 1975 | Walchle et al. |
3916873 | November 1975 | Wasserman |
3976081 | August 24, 1976 | Lapidot |
3982545 | September 28, 1976 | Silverstein |
4015607 | April 5, 1977 | Wright |
4094303 | June 13, 1978 | Johnston |
4168697 | September 25, 1979 | Cantekin |
4174716 | November 20, 1979 | Treace |
4326512 | April 27, 1982 | Peerless |
- Richards Microsurgery Catalog Price List No. 1584, Oct. 1, 1982, pp. 3-16.1. American V. Mueller, Catalog No. 80, p. 680. Xomed Inc. Catalog, pp. 4-10, 1979.
Patent History
Patent number: D274753
Type: Grant
Filed: Sep 24, 1982
Date of Patent: Jul 17, 1984
Inventor: Beverly W. Armstrong (Charlotte, NC)
Primary Examiner: Susan J. Lucas
Law Firm: Bell, Seltzer, Park & Gibson
Application Number: 6/422,860
Type: Grant
Filed: Sep 24, 1982
Date of Patent: Jul 17, 1984
Inventor: Beverly W. Armstrong (Charlotte, NC)
Primary Examiner: Susan J. Lucas
Law Firm: Bell, Seltzer, Park & Gibson
Application Number: 6/422,860
Classifications
Current U.S. Class:
D24/34;
D24/67