US2443144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter toy
Assignee: Individual
•
Filing: 1944-08-07
•
Granted: 1948-06-08
•
Expires: 1964-08-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:05
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/12; A63H29/00; A63H29/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US202281A
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GB190107990A
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FR466674A
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FR464462A
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US1191501A
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US1230881A
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US1401537A
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US1692397A
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US1481827A
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FR585523A
Cited
US1960141A
Cited
US1813852A
Cited
US1917965A
Cited
US2058678A
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US2132485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |