US3230439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery charging systems
Assignee: Sonotone Corp
•
Filing: 1962-05-07
•
Granted: 1966-01-18
•
Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Sobel Ilyitch Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:15
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/90; H02J7/94; H02J7/02; H02J7/04; H02J7/12; Y; Y10; Y10S; Y10S320/00; Y10S320/28; Y10S320/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2964693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |