1992-04-24
1995-01-24
Burke, Wallace R.
Brushware
Powered
D32 17, D32 40
Patent
active
D03546233
REFERENCES:
patent: D328192 (1992-07-01), Windsor
patent: 525189 (1894-08-01), Devore
patent: 1693269 (1928-11-01), Clulee
patent: 3343192 (1967-09-01), Goldstein et al.
patent: 4457038 (1984-07-01), Hammond
patent: 4509540 (1985-04-01), Inagaki
patent: 5187827 (1993-02-01), Wei
Burke Wallace R.
Smith Hugh E.
Tabor Lavone D.
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