US2715231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible buoyant article
Assignee: Individual
•
Filing: 1953-09-03
•
Granted: 1955-08-16
•
Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 Oliver F Marston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR955651A
Cited
FR379662A
Cited
FR389972A
Cited
US1990434A
Cited
US2171805A
Cited
US2350654A
Cited
GB563014A
Cited
US2405484A
Cited
US2660736A
Cited
GB657558A
Cited
US2542477A
Cited
DE857758C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |