Patent US3422957A successfully refreshed from Google Patents.
US3422957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unbalanced sensing switch assembly for centrifugal machines
Assignee: Motors Liquidation Co
•
Filing: 1966-06-03
•
Granted: 1969-01-21
•
Expires: 1986-06-03
Abstract
No abstract record available.
Inventors
- 👤 John R Fosler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:41
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/14; B04B9/146; D; D06; D06F; D06F34/00; D06F34/14; D06F34/16; D06F2103/00; D06F2103/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2678379A
Cited
US2895023A
Cited
US3214665A
Cited
US3084799A
Cited
US3235082A
Cited
US3229054A
Cited
US3333073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |