US1234685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for calculating-machines.
Assignee: ENSIGN Manufacturing Co
•
Filing: 1916-08-05
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Granted: 1917-07-24
•
Expires: 1936-08-05
Abstract
No abstract record available.
Inventors
- 👤 Christian Nielsen
- 👤 Chester Ira Babcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:36
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F16; F16H; F16H7/00; F16H7/06
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) | 1920-07-23 | 1921-01-22 | 1921-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-23 | 1925-01-22 | 1925-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-23 | 1929-01-22 | 1929-07-24 | $7700.00 | Window Closed / Lapsed |