Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1984-09-28
1987-02-17
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
Patent
active
D02883023
REFERENCES:
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patent: 3577771 (1971-05-01), Solheim
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The Golfworks 1984 Full Line Catalog, copyright 1984, pp. 3-1, 3-3, and 3-4, Ralph Maltby Enterprises, Inc., Newark, Ohio.
Maltby, Ralph, Golf Club Design, Fitting, Alteration and Repair, chapters 55 and 56, pp. 560-572.
Holtje Nelson C.
Jackson Robert R.
Ohaus Scale Corporation
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