US2719925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge device
Assignee: Individual
•
Filing: 1944-02-23
•
Granted: 1955-10-04
•
Expires: 1964-02-23
Abstract
No abstract record available.
Inventors
- 👤 Oppenheimer Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/28; H01J49/30; H01J49/02; H01J49/10; H01J49/12; H01J49/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1962158A
Cited
US1948384A
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US2009457A
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US2048094A
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US2157718A
Cited
US2251190A
Cited
US2258149A
Cited
US2221467A
Cited
US2370673A
Cited
US2285622A
Cited
US2373151A
Cited
US2427484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |