Patent US2473318A successfully refreshed from Google Patents.
US2473318A
Expired / Lapsed
US
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Phase or frequency modulation
Assignee: Pye Electronic Products Ltd
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Filing: 1947-08-07
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Granted: 1949-06-14
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Expires: 1967-08-07
Abstract
No abstract record available.
Inventors
- 👤 Weighton Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:45
CPC Classifications
H; H03; H03C; H03C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1964522A
Cited
US2335934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |