Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1979-06-15
1981-09-08
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D10 62, D1004
Patent
active
D02606160
REFERENCES:
patent: 53397 (1866-03-01), Branch
patent: D142051 (1945-08-01), White
patent: 230975 (1880-08-01), Walters
patent: D246699 (1977-12-01), Pingel
patent: 538051 (1895-04-01), Taylor
patent: 1126263 (1915-01-01), Norris
patent: 1237790 (1917-08-01), Kidder
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