US3524648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Word forming puzzle apparatus
Assignee: SPRINGLOK EDITIONS Inc
•
Filing: 1967-04-11
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Granted: 1970-08-18
•
Expires: 1987-04-11
Abstract
No abstract record available.
Inventors
- 👤 John O Nilan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/04; A63F3/0423; A63F3/00173; A63F3/00574; A63F2003/00577; A63F2003/0058; A63F2003/0063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1512147A
Cited
AT138774B
Cited
US2282871A
Cited
GB775170A
Cited
US3226122A
Cited
US3152806A
Cited
US3191938A
Cited
US3393914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |