US3095539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digitally positioned wave filter
Assignee: GTE Sylvania Inc
•
Filing: 1959-12-18
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Granted: 1963-06-25
•
Expires: 1979-12-18
Abstract
No abstract record available.
Inventors
- 👤 John E Bennett
- 👤 Stanley A Fierston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
H; H03; H03C; H03C3/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A FILTER TUNABLE IN RESPONSE TO A DIGITAL WORD COMPRISING, IN COMBINATION, A TUNED CIRCUIT INCLUDING AN INDUCTANCE AND A VOLTAGE VARIABLE CAPACITOR HAVING A PAIR OF TERMINALS, MEANS FOR APPLYING A REFERENCE VOLTAGE TO ONE TERMINAL OF SAID VOLTAGE VARIABLE CAPACITOR, AND MEANS FOR APPLYING A VOLTAGE TO THE OTHER TERMINAL VARYING IN ACCORDANCE WITH A BINARY WORD COMPRISING A DIGITAL-TOANALOG CONVERTER CONNECTED TO SAID OTHER TERMINAL, AND MEANS FOR APPLYING A BINARY WORD TO SAID CONVERTER.
References Cited (Backward Citations)
US2402258A
Cited
US2936428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |