Patent US2790072A successfully refreshed from Google Patents.
US2790072A
Expired / Lapsed
US
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Tunable transceiver
Assignee: US Philips Corp
•
Filing: 1952-09-25
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Granted: 1957-04-23
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Expires: 1972-09-25
Abstract
No abstract record available.
Inventors
- 👤 Hugenholtz Eduard Herman
- 👤 Mantz Marius Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:58
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2460781A
Cited
US2477039A
Cited
US2452601A
Cited
US2528632A
Cited
US2662180A
Cited
US2505670A
Cited
US2617985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |