US3440347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control plug-in unit
Assignee: SPENKO INTERN Inc
•
Filing: 1966-02-02
•
Granted: 1969-04-22
•
Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 Joel V Spencer
- 👤 Robert K Kopsidas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:21
CPC Classifications
G; G08; G08C; G08C23/00; G08C23/02; G08C17/00; H; H03; H03K; H03K17/00; H03K17/94; G08C2201/00; G08C2201/40; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1794935A
Cited
US2484092A
Cited
US2817025A
Cited
US3286031A
Cited
US3270216A
Cited
US3214640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |