US2739191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clipping amplifiers
Assignee: Raytheon Co
•
Filing: 1951-06-27
•
Granted: 1956-03-20
•
Expires: 1971-06-27
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Wisenbaker
- 👤 Martin R Richmond
- 👤 Benjamin R Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:36
CPC Classifications
H; H03; H03C; H03C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2435547A
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US2235550A
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US2346020A
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US2403245A
Cited
US2562476A
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US2437839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |