Sight glass

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of the sight glass of my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view of the right side thereof;

FIG. 5 is a side elevational view of the left side thereof;

FIG. 6 is atop plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D260401 August 25, 1981 Leopoldi
D271308 November 8, 1983 Leo
D276731 December 11, 1984 Steiner
D334940 April 20, 1993 Wolinsky
D351176 October 4, 1994 Agnew et al.
D363300 October 17, 1995 Schwartz
D406598 March 9, 1999 Grijalva
1724716 August 1929 Kryzanowsky
1883971 October 1932 Kryzanowsky
2301460 November 1942 Sauer
2312542 March 1943 Goodman
2620660 December 1952 Goldsmith
2943530 July 1960 Nagel
2961108 November 1960 Johnson
3345870 October 1967 Yoshinaga
4099851 July 11, 1978 Rethore
4627692 December 9, 1986 Clegg
4704983 November 10, 1987 Rung
5193032 March 9, 1993 Hirth
5381264 January 10, 1995 Wickholm et al.
Patent History
Patent number: D429266
Type: Grant
Filed: Dec 6, 1999
Date of Patent: Aug 8, 2000
Inventor: Robert J. Dillon (Brooklyn Center, MN)
Primary Examiner: Paula A. Mortimer
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 0/114,897
Classifications
Current U.S. Class: Lens Or Objective (D16/134); Magnifying Or Reducing Glass (D16/135)
International Classification: 1606;