US2320832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational game
Assignee: MAXIMON
•
Filing: 1941-06-14
•
Granted: 1943-06-01
•
Expires: 1961-06-14
Abstract
No abstract record available.
Inventors
- 👤 Mark J Schoenberg
- 👤 Harry I Maximon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/04; A63F3/0415; A63F2003/0418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-05-31 | 1946-11-30 | 1947-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-31 | 1950-11-30 | 1951-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-31 | 1954-11-30 | 1955-06-01 | $7700.00 | Window Closed / Lapsed |