US2840204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay device
Assignee: Unisys Corp
•
Filing: 1954-01-14
•
Granted: 1958-06-24
•
Expires: 1974-01-14
Abstract
No abstract record available.
Inventors
- 👤 Flavius A Mathamel
- 👤 John L Emery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:46
CPC Classifications
H; H02; H02P; H02P1/00; H02P1/02; H02P1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1937869A
Cited
US1939609A
Cited
US2061011A
Cited
US2339750A
Cited
US2536548A
Cited
US2482397A
Cited
US2650301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |