US2986749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-borne float for supporting people
Assignee: Individual
•
Filing: 1956-06-12
•
Granted: 1961-06-06
•
Expires: 1976-06-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Webber
- 👤 Irwin S Bitter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:07
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/02; B63C9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US293321A
Cited
US1060294A
Cited
US1107652A
Cited
FR540304A
Cited
US1514961A
Cited
US2564051A
Cited
US2605866A
Cited
GB734640A
Cited
US2879735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |