Patent US2801494A successfully refreshed from Google Patents.
US2801494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely controlled toy aircraft
Assignee: Individual
•
Filing: 1955-04-20
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Granted: 1957-08-06
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Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Ernst Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:47
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732656A
Cited
US1653039A
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US1852340A
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US1803469A
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US1928154A
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US2165050A
Cited
US2400704A
Cited
US2620596A
Cited
US2472556A
Cited
FR1094088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |