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US 2,691,542 A
Filed
: 02/15/1950
Issued
: 10/12/1954
Est. Priority Date
: 02/15/1950
Status: Expired due to Term
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30
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30 Citations
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Current Assignee
Henry G. Chenoweth
Original Assignee
Henry G. Chenoweth
Inventors
Chenoweth, Henry G.
Application Number
US03/144,225
Time in Patent Office
1,700 Days
Field of Search
US Class Current
277/390
CPC Class Codes
F16J 15/3496
use of special materials
Y10S 277/91
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