US2641647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning device
Assignee: Motorola Solutions Inc
•
Filing: 1949-06-14
•
Granted: 1953-06-09
•
Expires: 1969-06-14
Abstract
No abstract record available.
Inventors
- 👤 Gus W Wallin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:30
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1665616A
Cited
GB230615A
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US1939067A
Cited
US2206250A
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US2165575A
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US2286428A
Cited
US2402948A
Cited
US2435442A
Cited
GB597923A
Cited
US2496322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |