Patent US2561760A successfully refreshed from Google Patents.
US2561760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy airplane rotator
Assignee: Individual
•
Filing: 1945-07-06
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Granted: 1951-07-24
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Expires: 1965-07-06
Abstract
No abstract record available.
Inventors
- 👤 Frank E Stifter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:52
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US683665A
Cited
US706225A
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US1374002A
Cited
US1497555A
Cited
US1728245A
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US2071041A
Cited
US2067828A
Cited
US2334646A
Cited
US2416805A
Cited
US2405313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |