US978111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adding-machine.
Assignee: Individual
•
Filing: 1909-02-06
•
Granted: 1910-12-06
•
Expires: 1929-02-06
Abstract
No abstract record available.
Inventors
- 👤 William H Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:21
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; A; A63; A63B; A63B71/00; A63B71/06; A63B71/0619; A63B71/0669; A63B71/0672
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) | 1913-12-05 | 1914-06-06 | 1914-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-12-05 | 1918-06-06 | 1918-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-12-05 | 1922-06-06 | 1922-12-06 | $7700.00 | Window Closed / Lapsed |