US2951253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for cleaning wire spring relays
Assignee: AT&T Inc
•
Filing: 1957-07-01
•
Granted: 1960-09-06
•
Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Paul E Anderson
- 👤 Gould Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:05
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/02; B65G49/04; B65G49/0409; B65G49/0413; B65G49/0418
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1249286A
Cited
US1555468A
Cited
US1710357A
Cited
US1852405A
Cited
US2367652A
Cited
US2645797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |