Portable cleaning system

Details Portable cleaning system Portable cleaning system

1977-09-26

1980-01-15

Burke, Wallace R.

Machines not elsewhere specified

Agricultural or construction machinery

Element or attachment

D15 49, D1505

Patent

active

D02539519

REFERENCES:
patent: D91768 (1934-03-01), Donohue
patent: D115185 (1939-06-01), Clarkson
patent: D196958 (1963-11-01), Goodrich
patent: D216154 (1969-11-01), Bell
patent: 3921244 (1975-11-01), Warren et al.

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