US2768600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-borne airplane terminal
Assignee: Frederic R Harris Inc
•
Filing: 1953-10-14
•
Granted: 1956-10-30
•
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
2026-11-05 05:46
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/50; B64; B64F; B64F1/00; B64F1/22; B64F1/221
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US46223A
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US502568A
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US1320180A
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US1329336A
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US1247889A
Cited
GB290505A
Cited
US1937973A
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CH160376A
Cited
US2133721A
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GB480923A
Cited
US2501310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |