Patent US4599594A successfully refreshed from Google Patents.
Patent US3621501A successfully refreshed from Google Patents.
US3621501A
Expired / Lapsed
US
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Life preserver with flashing distress signal
Assignee: Individual
•
Filing: 1969-10-21
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Granted: 1971-11-23
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Expires: 1989-10-21
Abstract
Abstract A U-SHAPED NECK EMBRACING SHOULDER-SUPPORTED COLLARTYPE LIFE PRESERVER HAS THE FORWARD ENDS OF ITS LEGS EQUIPPED WITH A PAIR OF DEPENDING BALLAST-LIKE ADAPTERS. A MEDIAN TOP SURFACE PORTION OF ONE LEG OF THE LIFE PRESERVER HAS A BUILT-IN-FLASHLIGHT WITH AN EXPOSED AMBER COLORED DISTRESS SIGNALLING LENS. THE FLASHLIGHT BULB IS AUTOMATICALLY FLASHED ON BY A FLOAT OPERATED SWITCH WHEN THE OVERBOARD WEARER IS IMPERILED IN THE WATER.
Inventors
- 👤 Johnnie B Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:49
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/20
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |