US2578043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrovibrant high-voltage supply
Assignee: Individual
•
Filing: 1948-12-28
•
Granted: 1951-12-11
•
Expires: 1968-12-28
Abstract
No abstract record available.
Inventors
- 👤 Alexander C Christy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:08
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB206222A
Cited
US1898827A
Cited
US1926181A
Cited
GB426002A
Cited
US2097066A
Cited
US2108219A
Cited
US2251877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |