US2774322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-borne airplane terminal
Assignee: Frederic R Harris Inc
•
Filing: 1953-10-14
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Granted: 1956-12-18
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Expires: 1973-10-14
Abstract
No abstract record available.
Inventors
- 👤 Florence B Downs
- 👤 Michael S Lobenthal
- 👤 Bloch Monroe Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:38
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/22; B64F1/221; B63; B63B; B63B35/00; B63B35/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR425130A
Cited
US1300954A
Cited
US2234750A
Cited
US2360690A
Cited
US2594773A
Cited
US2471065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |