US2985493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor bearing
Assignee: Ampex Corp
•
Filing: 1957-07-18
•
Granted: 1961-05-23
•
Expires: 1977-07-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Dinsmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:55
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672; F; F16; F16C; F16C23/00; F16C23/02
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |