US3616772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float and method of making same
Assignee: Individual
•
Filing: 1969-09-12
•
Granted: 1971-11-02
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Expires: 1989-09-12
Abstract
Abstract AN IMPROVED FLOAT STRUCTURE WHICH FINDS PARTICULAR USE AS A SUPPORT FOR WATER-BORNE VEHICLES, SUCH AS BOATS, AIRCRAFT, AND THE LIKE, IN WHICH A RIGID GENERALLY PLANAR ELONGATED SKELETAL FRAME STRUCTURE IS ENCASED WITHIN A FLEXIBLE ENVELOPE CASING WHICH CAN BE SEALED WITH FLEXIBLE PLIABLE BUOYANT MEANS THEREIN, OR CAN BE PROVIDED WITH ONE OR MORE REMOVABLE AIR FILLED BLADDERS, THE FRAME STRUCTURE BEING CHARACTERIZED BY AN ELONGATED MEMBER EXTENDING LONGITUDINALLY ALONG THE BOTTOM OF THE CASING IN A MANNER SUCH THAT A LOAD FORCE RECEIVING SURFACE IS PROVIDED WITH RESPECT TO THE CASING BOTTOM.
Inventors
- 👤 John R Popkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:13
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06; B63B7/08; B63B7/082; B63H; B63H9/00; B63H9/04
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |