Title:
Jumping bellows
Document Type and Number:
United States Patent 2975855

Inventors:
Ludwig, Dudek
Publication Date:
03/21/1961
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Assignee:
Ludwig, Dudek
Primary Class:
182/137
International Classes:
A62B1/22; A62B1/00
US Patent References:
0396242
0647873
1166811
2985432Hydraulic pumping apparatus
Foreign References:
GB542335A




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