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Patent US2427691A successfully refreshed from Google Patents.
US2427691A
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US
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Noise reducing in pulse reception
Assignee: Individual
•
Filing: 1944-07-26
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Granted: 1947-09-23
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Expires: 1964-07-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Prichard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2159240A
Cited
US2137401A
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US2159803A
Cited
US2154091A
Cited
US2161286A
Cited
US2299390A
Cited
US2262841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |