US3267373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resonance bridge or frequency discriminator circuit and sensing system
Assignee: Colorado Instruments Inc
•
Filing: 1963-07-19
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Granted: 1966-08-16
•
Expires: 1983-07-19
Abstract
No abstract record available.
Inventors
- 👤 Richard C Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:52
CPC Classifications
G; G01; G01R; G01R17/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A FREQUENCY DISCRIMINATING RESONANT BRIDGE CIRCUIT COMPRISING: A FIRST TERMINAL ADAPTED FOR CONNECTION TO A SOURCE OF ALTERNATING FREQUENCY SIGNALS; A SECOND TERMINAL; A FIRST RESISTOR CONNECTED BETWEEN SAID FIRST AND SECOND TERMINALS; A FIRST CAPACITOR CONNECTED TO SAID SECOND TERMINALS; A THIRD TERMINAL; A SECOND RESISTOR CONNECTED BETWEEN SAID FIRST AND THIRD TERMINALS; A SECOND CAPACITOR CONNECTED TO SAID THIRD TERMINALS; A FOURTH TERMINAL; A THIRD RESISTOR AND A FIRST DIODE CONNECTED IN SERIES BETWEEN SAID SECOND AND SAID FOURTH TERMINALS; A FOURTH RESISTOR AND A SECOND DIODE CONNECTED IN SERIES BETWEEN SAID THIRD AND FOURTH TERMINALS;
References Cited (Backward Citations)
US2519668A
Cited
US2774959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |