US2647749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instruction accessory for chess games
Assignee: Individual
•
Filing: 1950-03-20
•
Granted: 1953-08-04
•
Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 George F Wales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/02; A63F3/022; G; G09; G09B; G09B19/00; G09B19/22; A63F3/00173; A63F3/00261; A63F2003/00264; A63F2003/00318
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB189607770A
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US1532069A
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US1644160A
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US1730640A
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US1750539A
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US1928565A
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US2063331A
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US2189504A
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US2543339A
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US2490092A
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US2507916A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |