Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1981-04-16
1984-06-26
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D11181
Patent
active
D02744120
REFERENCES:
patent: D261875 (1981-11-01), Anderson
patent: 823441 (1906-06-01), Robinson
patent: 1475857 (1923-11-01), Neuhaus
patent: 1712028 (1929-05-01), Cromie
patent: 2351449 (1944-06-01), Noble
patent: 2734727 (1956-02-01), Hensley
patent: 3279133 (1966-10-01), DeKorte
patent: 4050404 (1977-09-01), McMackin
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