Washing – cleaning – or drying machine – Washing – cleaning – or drying machine – Surface treatment – e.g. – floor – street – etc.
Patent
1987-09-10
1989-12-19
Dunkins, Bruce W.
Washing, cleaning, or drying machine
Washing, cleaning, or drying machine
Surface treatment, e.g., floor, street, etc.
Patent
active
D03051684
REFERENCES:
patent: 2898621 (1959-08-01), Vance
patent: 3634905 (1972-01-01), Boyd
patent: 4670937 (1987-06-01), Sumerau et al.
patent: 4782552 (1988-11-01), Bartlett et al.
Dunkins Bruce W.
Riccar America Company
Takemoto Ruth
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