Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1988-07-05
1992-06-09
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
Patent
active
D03268241
REFERENCES:
patent: 1922895 (1933-08-01), Lemaine
patent: 3028678 (1962-04-01), Bakehouse
patent: 3890717 (1975-06-01), Haun
patent: 4434558 (1984-06-01), Face, Jr. et al.
patent: 4650005 (1987-03-01), Tebben
Davis Antoine D.
Holtje Nelson C.
Lowell Rudolph L.
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