US2684479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position or voltage comparator circuit
Assignee: United States Department of the Navy
•
Filing: 1949-10-11
•
Granted: 1954-07-20
•
Expires: 1969-10-11
Abstract
No abstract record available.
Inventors
- 👤 Richard G Hill
- 👤 Earl H Rix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:34
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; G01S13/68; F; F41; F41G; F41G5/00; F41G5/06; G01S7/00; G01S7/02; G01S7/40
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |