US2633536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrahigh-frequency pulsing system
Assignee: Individual
•
Filing: 1945-04-07
•
Granted: 1953-03-31
•
Expires: 1965-04-07
Abstract
No abstract record available.
Inventors
- 👤 David F Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:02
CPC Classifications
H; H03; H03H; H03H2/00; H03H2/005; H03H2/006; H03K; H03K3/00; H03K3/78; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7724
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2020950A
Cited
US2122393A
Cited
US2228119A
Cited
US2190078A
Cited
US2431952A
Cited
US2449443A
Cited
US2448364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |