US3587503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for constructing buoyant platforms
Assignee: Individual
•
Filing: 1969-03-06
•
Granted: 1971-06-28
•
Expires: 1989-03-06
Abstract
Abstract THE INVENTION PROVIDES MEANS FOR CONSTRUCTING A SINGLE OR MULTILAYER BOUYANT PLATFORM FROM INDIVIDUAL BUOYANT UNITS WHICH ARE DESIGNED ON A MODULAR BASIS AND WHICH CAN BE COUPLED TOGETHER EDGEWISE BY COMPLEMENTARY TONGUES AND GROOVES AND FACE-TO-FACE THROUGH SELF-ALIGNING OPENINGS.
Inventors
- 👤 Eugen Stehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:03
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/34; B63B35/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |