Patent US2797922A successfully refreshed from Google Patents.
US2797922A
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Toy vehicle and platform instruction apparatus
Assignee: Individual
•
Filing: 1953-04-16
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Granted: 1957-07-02
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Expires: 1973-04-16
Abstract
No abstract record available.
Inventors
- 👤 William F Thompson
- 👤 John W Chesworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:58
CPC Classifications
A; A63; A63H; A63H17/00; A63H17/26; A63H17/36; A63H17/38; A63H17/44; G; G09; G09B; G09B9/00; G09B9/02; G09B9/04; G09B9/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1858020A
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US1866477A
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US2092905A
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US2208426A
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US2454896A
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US2658967A
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US2642700A
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US2650094A
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US2647343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |