US2869089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer unit
Assignee: Unisys Corp
•
Filing: 1953-04-29
•
Granted: 1959-01-13
•
Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Hampel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732529A
Cited
US2154070A
Cited
US2392701A
Cited
US2355611A
Cited
US2569468A
Cited
US2535203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |