Patent US2582690A successfully refreshed from Google Patents.
US2582690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backlash eliminating device
Assignee: AT&T Inc
•
Filing: 1949-05-06
•
Granted: 1952-01-15
•
Expires: 1969-05-06
Abstract
No abstract record available.
Inventors
- 👤 Erwin E Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:51
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/038; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; F16H55/00; F16H55/02; F16H55/22; F16H55/24; F16H57/021; F16H57/022; F16H57/039; F16H2057/0213; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19623; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/19842
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US293215A
Cited
US1274918A
Cited
US1472848A
Cited
US1336286A
Cited
US1981687A
Cited
US2176956A
Cited
US2348392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |