Sreekanth US2689425

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Title: US2689425 - Text Title unavailable - see image for title

Inventor: De Veen

Issue Date: 1954-09

Current U.S. Class: 043/009.7: FISHING, TRAPPING, AND VERMIN DESTROYING; FISHING; Nets; Trawl; Having specific flow affected board device for holding net mouth open, e.g., an otterboard, etc.
114/245: SHIPS; TOWING OR PUSHING; Submerged object; Having depth-control means
114/246: SHIPS; TOWING OR PUSHING; Steering
367/106: COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES; ECHO SYSTEMS; Distance or direction finding; With towing


Forward References: 1 patent references this one
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Patent  Pub.Date  Inventor Assignee Title
Buy PDF- 6pp US4640037 1987-02-03 Ashworth; John F. H.   Trawl doors


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