US2452132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diode modulator
Assignee: Individual
•
Filing: 1944-06-26
•
Granted: 1948-10-26
•
Expires: 1964-06-26
Abstract
No abstract record available.
Inventors
- 👤 Edward H Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:29
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C1/00; H03C1/08; H03C1/14; H03D; H03D3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1948169A
Cited
US2128993A
Cited
US2161406A
Cited
US2267703A
Cited
US2248197A
Cited
US2296921A
Cited
US2312070A
Cited
US2362898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |