Title:
Vibrator
Document Type and Number:
United States Patent 2749097

Inventors:
Billner, Karl P.
Publication Date:
06/05/1956
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Assignee:
VACUUM CONCRETE INC
Primary Class:
366/114
Other Classes:
366/124, 60/370, 248/205.900
International Classes:
B06B1/18
US Patent References:
2198765Vacuum cup and vacuum cup system
2469525Dental cement apparatus
2472161Vacuum-actuated abrading device
2501158Form vibrator
2640218Apparatus for operating a vacuum currying apparatus


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