Washing – cleaning – or drying machine – Washing – cleaning – or drying machine – Surface treatment – e.g. – floor – street – etc.
Design Patent
2003-08-20
2004-10-26
Delehanty, Robert A. (Department: 2914)
Washing, cleaning, or drying machine
Washing, cleaning, or drying machine
Surface treatment, e.g., floor, street, etc.
Design Patent
active
D0497694
CLAIM:
The ornamental design of mechanical sweeper, as shown and described.
REFERENCES:
patent: D166140 (1952-03-01), Atkins
patent: 3750215 (1973-08-01), Liebscher
patent: D289933 (1987-05-01), Berfield et al.
patent: D361178 (1995-08-01), Piret
Manual Powered Sweepers Mini Sweep and Maxi Sweep, May 2001.
Turbo 770/970 Haaga Hand Sweeping Machine, no date.
Nam Peter Ho Ka
Wareham Richard A.
Lowe A. Burgess
Morrison John W.
The Hoover Company
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