US2478754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing electrical condensers
Assignee: Individual
•
Filing: 1944-11-13
•
Granted: 1949-08-09
•
Expires: 1964-11-13
Abstract
No abstract record available.
Inventors
- 👤 Dubilier Philip
- 👤 Katzman Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:32
CPC Classifications
H; H01; H01G; H01G13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1694927A
Cited
US1911341A
Cited
US1890312A
Cited
US2047260A
Cited
US2011555A
Cited
US2047273A
Cited
GB474595A
Cited
GB502039A
Cited
GB508057A
Cited
GB556997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-08 | 1953-02-07 | 1953-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-08 | 1957-02-07 | 1957-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-08 | 1961-02-07 | 1961-08-09 | $7700.00 | Window Closed / Lapsed |