Patent US4721401A successfully refreshed from Google Patents.
Patent US3570030A successfully refreshed from Google Patents.
US3570030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Life saving buoyancy system
Assignee: Gentex Corp
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Filing: 1969-02-03
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Granted: 1971-03-16
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Expires: 1989-02-03
Abstract
Abstract A LIFE SAVING BUOYANCE SYSTEM IN WHICH A BUOYANT MASS LOCATED IN THE REGION OF THE CHEST OF THE WEARER AND SEPARATE AND DISCRETE BUOYANT MASSES IN THE WRIST OR FOREARM REGIONS OF THE WEARER ARE SECURED TO THE WEARER''S BODY SO AS TO ORIENT THE BODY OF A FLOATING WEARER FROM A FACE DOWN, "DEAD DOG" POSITION TO A FACE UP, HEAD OUT OF THE WATER POSITION AND TO SUPPORT HIM IN THAT POSITION. IF DESIRED, A BUOYANT MASS MAY BE POSITIONED BEHIND THE WEARER''S HEAD TO ENSURE THAT HIS HEAD IS OUT OF THE WATER WHEN IN THE FACE UP POSITION.
Inventors
- 👤 Edgar G Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:04
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/087; B63C9/093
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |