US2434446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing extremely short waves
Assignee: GENERALE DE MACHINES ET BREVETS Ste
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Filing: 1936-11-11
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Granted: 1948-01-13
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Expires: 1956-11-11
Abstract
No abstract record available.
Inventors
- 👤 Toulon Pierre Marie Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:53
CPC Classifications
H; H03; H03B; H03B13/00; H01; H01J; H01J25/00; H01J25/78; H01J31/00; H01J31/02; H01J31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |