Sweeping machine

Details Sweeping machine Sweeping machine

1991-12-09

1994-05-31

McInroy, Ruth

Washing, cleaning, or drying machine

Washing, cleaning, or drying machine

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

Patent

active

D03474992

REFERENCES:
patent: D206576 (1967-01-01), Knapp et al.
patent: D249692 (1978-09-01), Bothun et al.
patent: D333018 (1993-02-01), Bothun et al.
patent: 4580313 (1986-04-01), Blehert
patent: 4979260 (1990-12-01), Holsten et al.
Modern Materials Handling, May 1961, p. 218, "Tennant 85" Sweeper.

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