Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1975-10-20
1977-08-23
Roltje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02454815
REFERENCES:
patent: 1667802 (1928-05-01), Homan
patent: 2925659 (1960-02-01), Lovely
patent: 3828442 (1974-08-01), Bernard
Petrucci Robert A.
Ronci Anthony
Roltje Nelson C.
Salter Elliot A.
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