US2928013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical discharge device
Assignee: Siemens and Halske AG
•
Filing: 1955-11-16
•
Granted: 1960-03-08
•
Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 Gawehn Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2123386A
Cited
US2125279A
Cited
US2189636A
Cited
US2304412A
Cited
US2459997A
Cited
US2543728A
Cited
US2624024A
Cited
US2737607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |