Material or article handling equipment – Conveying – lifting – or transferring article – Crane or hoist
Patent
1989-02-21
1992-04-07
Burke, Wallace R.
Material or article handling equipment
Conveying, lifting, or transferring article
Crane or hoist
Patent
active
D03252760
REFERENCES:
patent: D134180 (1942-10-01), Parker
patent: D141471 (1945-01-01), Knutson
patent: 3526388 (1970-09-01), Geiger et al.
patent: 3876182 (1975-04-01), Hansson
The Lowery Co. Brochure, Jul. 20, 1949, p. 4, Electric Hoist, Nos. 1-6, top of page.
Baynham Holly H.
Burke Wallace R.
National Air Vibrator Company
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