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Digital display mechanism
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Patent number 4,022,376
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Issue date May 10, 1977
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P. R. Mallory & Co., Inc.
-
Richard H. Weber
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G06 - COMPUTING CALCULATING COUNTING
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Interval timer
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Patent number 4,022,075
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Issue date May 10, 1977
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P. R. Mallory & Co., Inc.
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Maurice E. Schuder
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G04 - HOROLOGY
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Automatic timer
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Patent number 3,991,289
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Issue date Nov 9, 1976
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P. R. Mallory & Co., Inc.
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Richard H. Weber
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G04 - HOROLOGY