Patent US2475675A successfully refreshed from Google Patents.
US2475675A
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US
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Radio switching system
Assignee: Automatic Electric Laboratories Inc
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Filing: 1946-05-27
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Granted: 1949-07-12
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Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 Edward S Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:57
CPC Classifications
H; H04; H04W; H04W88/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1619228A
Cited
US1572756A
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US2061699A
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US2101668A
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US2176868A
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US2206231A
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US2265056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |