US2597013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse modulator circuit
Assignee: United States, WAR, Secretary of
•
Filing: 1943-03-03
•
Granted: 1952-05-20
•
Expires: 1963-03-03
Abstract
No abstract record available.
Inventors
- 👤 John W Marchetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:25
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/78; H03K7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2085100A
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US2157929A
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US2139432A
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US2159493A
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US2244003A
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US2173180A
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US2276994A
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US2279007A
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US2405070A
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US2416718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |