US3022418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic control circuit
Assignee: National Research Council Canada
•
Filing: 1957-09-25
•
Granted: 1962-02-20
•
Expires: 1977-09-25
Abstract
No abstract record available.
Inventors
- 👤 Smyth Henry Lyall Ross
- 👤 Makow David Mark
- 👤 Stanley K Keays
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:13
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/68
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |