Combined road marker and lock-in sign

- Lamba Systems, Inc.
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Description

FIG. 1 is a perspective view of a combined road marker and lock-in sign showing my new design;

FIG. 2 is a side elevational taken from the left of FIG. 1;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D60293 January 1922 Meden
D235744 July 1975 England
D272809 February 28, 1984 Bent et al.
1058881 February 1967 Semco
2957444 October 1960 Boettler
3099244 July 1963 Knapp
3520235 July 1970 Palazzolo et al.
3809007 May 1974 Brown
4197808 April 15, 1980 Kinninger
4329800 May 18, 1982 Shuman
Patent History
Patent number: D277738
Type: Grant
Filed: Mar 14, 1983
Date of Patent: Feb 26, 1985
Assignee: Lamba Systems, Inc. (St. Paul, MN)
Inventors: Nick G. Grammas (Plymouth, MN), Michael T. Callas (Edina, MN)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Burd, Bartz & Gutenkauf
Application Number: 6/475,079
Classifications
Current U.S. Class: D10/109