US3496671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy airplane
Assignee: THEODORE A KORONA
•
Filing: 1968-02-09
•
Granted: 1970-02-24
•
Expires: 1988-02-09
Abstract
No abstract record available.
Inventors
- 👤 Theodore A Korona
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:46
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1887337A
Cited
US2089594A
Cited
US2708431A
Cited
US2878615A
Cited
US3068612A
Cited
US3084477A
Cited
US3238663A
Cited
US3177612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |