Measuring – testing – or signalling instruments – Security or signal instrument or casing – Aural – i.e. – audible
Patent
1989-03-20
1991-04-09
Burke, Wallace R.
Measuring, testing, or signalling instruments
Security or signal instrument or casing
Aural, i.e., audible
D10120
Patent
active
D03160556
REFERENCES:
patent: D106175 (1937-09-01), Bevin
patent: D288246 (1987-02-01), Wing
patent: 575059 (1897-01-01), Ewbank, Jr.
patent: 1441247 (1923-01-01), Shiono
patent: 2931028 (1960-03-01), Propst
patent: 3521275 (1970-07-01), Saito
Radsport Brugelmann brochure (date unknown) pp. 103 and 151.
Burke Wallace R.
Jackson Marcus
Rixen & Karl GmbH
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