Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Geometric
Patent
1979-11-30
1982-06-08
Tung, T.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Geometric
D19 36, D24 23, D24 29, D24 99, D1004
Patent
active
D02648245
REFERENCES:
patent: D158946 (1950-06-01), Duelfer
patent: 575671 (1897-01-01), Watts et al.
patent: 946149 (1910-01-01), Newman
patent: 1607097 (1926-11-01), Murphy
patent: 2097496 (1937-11-01), Lunzer
patent: 2518128 (1950-08-01), Dufilho
patent: 3492729 (1970-02-01), Crain
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