Patent US2580539A successfully refreshed from Google Patents.
US2580539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical remote-control system
Assignee: Individual
•
Filing: 1947-09-30
•
Granted: 1952-01-01
•
Expires: 1967-09-30
Abstract
No abstract record available.
Inventors
- 👤 Carl L Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:40
CPC Classifications
H; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H02J13/1313; Y; Y02; Y02E; Y02E60/00; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1781497A
Cited
US2213100A
Cited
US2287164A
Cited
US2305862A
Cited
US2297816A
Cited
US2263298A
Cited
US2387444A
Cited
US2347777A
Cited
US2397028A
Cited
US2375722A
Cited
US2347108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |