Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1976-01-05
1977-10-04
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D1004
Patent
active
D02459671
REFERENCES:
patent: 677339 (1901-07-01), Comstock
patent: 2551747 (1951-05-01), Ille
patent: 2832141 (1958-04-01), Taylor
patent: 3589013 (1971-06-01), Colon
Guy-Chart Tools Limited
Holtje Nelson C.
Westell Robert L.
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