US3353292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast and buoyancy attachments for trawl doors
Assignee: Individual
•
Filing: 1967-01-30
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Granted: 1967-11-21
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Frank J Luketa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:48
CPC Classifications
A; A01; A01K; A01K73/00; A01K73/02; A01K73/04; A01K73/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A TRAWL DOOR, A WATER REACTION BODY HAVING AN UPPER EDGE, AND A BUOYANCY ATTACHMENT COMPRISING A GLOBULAR BODY MEMBER HAVING WALL MEANS FORMING AN ENCLOSED GAS TIGHT CHAMBER, AND SAID CHAMBER CONTAINING A GAS, PROVIDING SAID BODY MEMBER WITH A GROSS SPECIFIC GRAVITY SUBSTANTIALLY LESS THAN ONE; AND MOUNTING MEANS HAVING PORTIONS PROJECTING REARWARDLY FROM AN UPPER POSTERIOR PORTION OF SAID WATER REACTION BODY FOR DETACHABLY SECURING SAID BODY MEMBER TO SAID UPPER POSTERIOR PORTION OF SAID WATER REACTION BODY, INWARDLY OF SAID UPPER EDGE, AND REARWARDLY OFFSET THEREFROM.
Claim 2
Dependent Claim
91 words
IN A TRAWL DOOR, A WATER REACTION BODY HAVING AN UPPER EDGE, AND A BUOYANCY ATTACHMENT COMPRISING A GLOBULAR BODY MEMBER HAVING WALL MEANS FORMING AN ENCLOSED GAS TIGHT CHAMBER, AND SAID CHAMBER CONTAINING A GAS, PROVIDING SAID BODY MEMBER WITH A GROSS SPECIFIC GRAVITY SUBSTANTIALLY LESS THAN ONE; AND MOUNTING MEANS HAVING PORTIONS PROJECTING REARWARDLY FROM AN UPPER POSTERIOR PORTION OF SAID WATER REACTION BODY FOR DETACHABLY SECURING SAID BODY MEMBER TO SAID UPPER POSTERIOR PORTION OF SAID WATER REACTION BODY, INWARDLY OF SAID UPPER EDGE, AND REARWARDLY OFFSET THEREFROM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |