Measuring – testing – or signalling instruments – Time-measuring instrument or casing
patent: D189917 (1961-03-01), Weaver
patent: D218707 (1970-09-01), DiPinto
patent: D235008 (1975-04-01), Ishikawa
patent: 3713285 (1973-01-01), Haufe
patent: 3823547 (1974-07-01), Hulterstrum
Industrial Design, 5/71, p. 67, Timer #131 at right.
Holtje Nelson C.
Izumi Denki Company Limited
Waters Eric H.
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