Patent US2912100A successfully refreshed from Google Patents.
US2912100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism
Assignee: AT&T Inc
•
Filing: 1955-11-25
•
Granted: 1959-11-10
•
Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 Logan Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:40
CPC Classifications
F; F16; F16H; F16H29/00; F16H29/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/19; Y10T74/1987; Y10T74/19884
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |