US3052858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic motion responsive device
Assignee: EDCLIFF INSTRUMENTS Inc
•
Filing: 1958-11-03
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Granted: 1962-09-04
•
Expires: 1978-11-03
Abstract
No abstract record available.
Inventors
- 👤 William W Darlington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:29
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/20; G01D5/22; G01D5/2291
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB472991A
Cited
US2277499A
Cited
US2318271A
Cited
CH219188A
Cited
US2332994A
Cited
US2430757A
Cited
US2570672A
Cited
US2878441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |