US2506780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage battery charger
Assignee: Individual
•
Filing: 1946-01-31
•
Granted: 1950-05-09
•
Expires: 1966-01-31
Abstract
No abstract record available.
Inventors
- 👤 Salardi Albert Bernhard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:32
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1439483A
Cited
US1957016A
Cited
US1962992A
Cited
US1921719A
Cited
US1993914A
Cited
US1981738A
Cited
US1954931A
Cited
US2137894A
Cited
US2227118A
Cited
US2369826A
Cited
US2383722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-08 | 1953-11-07 | 1954-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-08 | 1957-11-07 | 1958-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-08 | 1961-11-07 | 1962-05-09 | $7700.00 | Window Closed / Lapsed |