Patent US4125327A successfully refreshed from Google Patents.
Patent US2684479A successfully refreshed from Google Patents.
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 17:48
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2150241A
Cited
US2185367A
Cited
US2231929A
Cited
US2232390A
Cited
GB552891A
Cited
US2456666A
Cited
US2512086A
Cited
US2329073A
Cited
US2499349A
Cited
US2439711A
Cited
US2464822A
Cited
US2471872A
Cited
US2452880A
Cited
US2434822A
Cited
US2541879A
Cited
US2468350A
Cited
US2621295A
Cited
US2432826A
Cited
US2505511A
Cited
US2614227A
Cited
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 |