Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent
1990-04-25
1992-06-09
Lucas, Susan J.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Visual
D26 31
Patent
active
D03268268
REFERENCES:
patent: D314721 (1991-02-01), Williams, Jr. et al.
patent: D315113 (1991-03-01), Faulkner
patent: 2843952 (1958-07-01), Zgraggen
patent: 3750138 (1973-07-01), Burgan et al.
patent: 3787808 (1974-01-01), Knopf
patent: 4574269 (1986-03-01), Miller
patent: 4631516 (1986-12-01), Cllinker
Gernstein Terry M.
Lucas Susan J.
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