US2611213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
U control toy airplane
Assignee: HENRY ENGINEERING Co
•
Filing: 1949-11-12
•
Granted: 1952-09-23
•
Expires: 1969-11-12
Abstract
No abstract record available.
Inventors
- 👤 Howard W Johnson
- 👤 Robert L Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:39
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848809A
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US1507710A
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US2061953A
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US2303965A
Cited
US2323506A
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US2416805A
Cited
US2454598A
Cited
US2527274A
Cited
US2559049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-23 | 1956-03-24 | 1956-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-23 | 1960-03-24 | 1960-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-23 | 1964-03-24 | 1964-09-23 | $7700.00 | Window Closed / Lapsed |