Vacuum cleaner

Details Vacuum cleaner Vacuum cleaner

1987-10-21

1989-12-26

Dunkins, Bruce W.

Washing, cleaning, or drying machine

Washing, cleaning, or drying machine

Surface treatment, e.g., floor, street, etc.

Patent

active

D03052699

REFERENCES:
patent: D101322 (1936-09-01), Beitman
patent: D153974 (1949-05-01), Petersen
patent: D155903 (1949-11-01), Kelly
patent: D162633 (1951-03-01), Dreyfuss
patent: D193264 (1962-07-01), Kelnhofer
patent: 3755843 (1973-09-01), Goertzen, III et al.
patent: 4373228 (1983-02-01), Dyson
patent: 4559665 (1985-12-01), Fitzwater
patent: 4571772 (1986-02-01), Dyson

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