Patent US2449985A successfully refreshed from Google Patents.
US2449985A
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Receiver for pulse waves
Assignee: International Standard Electric Corp
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Filing: 1941-10-30
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Granted: 1948-09-28
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Expires: 1961-10-30
Abstract
No abstract record available.
Inventors
- 👤 Paul F M Gloess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/52; H04N5/53; G; G01; G01S; G01S1/00; G01S1/02; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/08; G01S7/28; G01S7/285; G01S7/34; H03; H03G; H03G3/00; H03G3/20; H03G3/22; H03K; H03K5/00; H03K5/13; H03K5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |