US2653290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical system
Assignee: Individual
•
Filing: 1951-05-15
•
Granted: 1953-09-22
•
Expires: 1971-05-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Hooven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:42
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/28; Y; Y10; Y10S; Y10S388/00; Y10S388/90; Y10S388/902; Y10S388/923; Y10S388/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |