Patent US2666644A successfully refreshed from Google Patents.
US2666644A
Expired / Lapsed
US
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Game board apparatus
Assignee: Individual
•
Filing: 1951-02-15
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Granted: 1954-01-19
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Expires: 1971-02-15
Abstract
No abstract record available.
Inventors
- 👤 Richard A Strehlow
- 👤 Walter A Heiby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:05
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/00003; A63F3/00063; A63F3/00072; A63F3/00006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1529908A
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US1509312A
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US1574394A
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US1642711A
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US1616328A
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US1695144A
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US1779584A
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US1994053A
Cited
US2026082A
Cited
US2174058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |