US3423093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Game board and playing pieces for a game adapted to teach chemistry
Assignee: Yissum Research Development Co of Hebrew University of Jerusalem
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Filing: 1965-08-27
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Granted: 1969-01-21
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Expires: 1985-08-27
Abstract
No abstract record available.
Inventors
- 👤 Noam Lahav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:45
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/04; A63F3/0423; A63F3/0457; G; G09; G09B; G09B23/00; G09B23/24; G09B23/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1420400A
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US2128608A
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US2296623A
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US2458966A
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FR918248A
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US2492563A
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US2930621A
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US2970840A
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US2891322A
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US3145482A
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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) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |