US2104784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge device
Assignee: AEG AG
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Filing: 1935-11-14
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Granted: 1938-01-11
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Expires: 1955-11-14
Abstract
No abstract record available.
Inventors
- 👤 Wiegand Erich
- 👤 Meyer Wilfried
- 👤 Pulfrich Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:16
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/32; H01J5/40; H01B; H01B1/00; H01B1/06; H01B1/08; H01J19/00; H01J19/02; H01J5/02; H01J5/04; H01J5/46; H01J2893/00; H01J2893/0001; H01J2893/0033; H01J2893/0034; H01J2893/0035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-01-10 | 1941-07-12 | 1942-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-10 | 1945-07-12 | 1946-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-10 | 1949-07-12 | 1950-01-11 | $7700.00 | Window Closed / Lapsed |