Hydrometer

Description

FIG. 1 is a top perspective view of a hydrometer showing my new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a side elevational view of another embodiment of my new design of FIGS. 1-5 with a stem sheath added thereto;

FIG. 7 is a bottom plan view of FIG. 6.

Referenced Cited
U.S. Patent Documents
D150328 July 1948 Appel
D190096 April 1961 Wayne
D199083 September 1964 Naylor
D217499 May 1970 Pietramale
D239924 May 1976 Elshansky
1648412 November 1927 Linebarger
3722292 March 1973 Pietramale
4037481 July 26, 1977 Callahan
4055708 October 25, 1977 Yamamoto
4074025 February 14, 1978 Miyagawa
Patent History
Patent number: D266315
Type: Grant
Filed: Aug 12, 1980
Date of Patent: Sep 28, 1982
Inventor: Ulf S. Tamm (1224 Chene Bougerics)
Primary Examiner: Nelson C. Holtje
Attorney: Thomas R. Boland
Application Number: 6/177,501
Classifications
Current U.S. Class: Specific Gravity (8) (D10/84)
International Classification: D1004;