Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1980-06-23
1982-09-28
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 65, D1004
Patent
active
D02663139
REFERENCES:
patent: D165849 (1952-02-01), Jordan
patent: D250094 (1978-10-01), Forsman
patent: D250177 (1978-11-01), Hulen
patent: 507216 (1893-10-01), Colby
patent: 3432927 (1969-03-01), Springer
patent: 4014103 (1977-03-01), Roth
patent: 4057902 (1977-11-01), Matsui
British Plastics-3/53-p. 92-"The Divigraph".
Holtje Nelson C.
Phillips C. A.
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