US2189928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge vessel
Assignee: Alcatel Lucent Deutschland AG
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Filing: 1938-05-25
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Granted: 1940-02-13
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Expires: 1958-05-25
Abstract
No abstract record available.
Inventors
- 👤 Scharfnagel Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:55
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; H; H01; H01J; H01J5/00; H01J5/32; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/40; C04B2237/50; C04B2237/62; C04B2237/76; C04B2237/765; C04B2237/78; C04B2237/84; C04B2237/88
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) | 1943-02-12 | 1943-08-14 | 1944-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-12 | 1947-08-14 | 1948-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-12 | 1951-08-14 | 1952-02-13 | $7700.00 | Window Closed / Lapsed |