US2593979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tethered toy airplane
Assignee: SKYCRAFT Manufacturing CORP
•
Filing: 1952-01-11
•
Granted: 1952-04-22
•
Expires: 1972-01-11
Abstract
No abstract record available.
Inventors
- 👤 Jack A Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:09
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1331418A
Cited
US1497774A
Cited
US1693189A
Cited
US2334760A
Cited
US2429502A
Cited
US2548748A
Cited
US2494430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |