US2689751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Book novelty
Assignee: —
•
Filing: —
•
Granted: 1954-09-21
•
Expires: 1971-09-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:28
CPC Classifications
B; B42; B42D; B42D15/00; A; A63; A63H; A63H33/00; A63H33/38; B42D1/00; B42D1/009; G; G09; G09B; G09B5/00; G09B5/06; G09B5/062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1028921A
Cited
US1011833A
Cited
US1112813A
Cited
US1689637A
Cited
US2136326A
Cited
US2548043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |