Patent US1809925A successfully refreshed from Google Patents.
Patent US2929053A successfully refreshed from Google Patents.
US2929053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pick-off apparatus
Assignee: Unisys Corp
•
Filing: 1954-10-21
•
Granted: 1960-03-15
•
Expires: 1974-10-21
Abstract
No abstract record available.
Inventors
- 👤 Bolton Robert Havelock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
G; G01; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2515969A
Cited
US2484022A
Cited
US2474549A
Cited
US2567682A
Cited
US2564221A
Cited
US2685207A
Cited
US2878445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |