US2443434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic signal bias control means and apparatus
Assignee: PRESS WIRELESS Inc
•
Filing: 1944-05-23
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Granted: 1948-06-15
•
Expires: 1964-05-23
Abstract
No abstract record available.
Inventors
- 👤 Robert M Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:02
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/10; H04N; H04N1/00; H04N1/00095; H04N1/00103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2005111A
Cited
US2233165A
Cited
US2292100A
Cited
US2299945A
Cited
US2411853A
Cited
US2366363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |