Patent US3074021A successfully refreshed from Google Patents.
US3074021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal discriminator
Assignee: GEN ELECTRONIC LAB Inc
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Filing: 1958-04-03
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Granted: 1963-01-15
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Expires: 1978-04-03
Abstract
No abstract record available.
Inventors
- 👤 Robert G Rullman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:29
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A CRYSTAL DISCRIMINATOR CIRCUIT COMPRISING A PAIR OF CRYSTALS, A PAIR OF INPUT TERMINALS, A PAIR OF OUTPUT TERMINALS, AND A GROUND TERMINAL, ONE OF THE TERMINALS OF SAID INPUT AND OUTPUT PAIRS COUPLED TO THE GROUND TERMINAL, A PAIR OF CAPACITORS ACROSS SAID INPUT TERMINALS, ONE OF SAID CRYSTALS IN SERIES WITH AN ADDER RESISTOR AND SAID OTHER INPUT AND OUTPUT TERMINALS OF SAID PAIRS, THE OTHER OF SAID CRYSTALS IN SERIES WITH ANOTHER ADDER RESISTOR AND SAID OTHER INPUT AND OUTPUT TERMINALS OF SAID PAIRS, A PAIR OF PARALLEL CONNECTED CAPACITORS COUPLED TO SAID ONE CRYSTAL AND GROUND, ANOTHER PAIR OF PARALLEL CONNECTED CAPACITORS COUPLED TO SAID OTHER CRYSTAL AND GROUND, ONE OF EACH OF SAID PAIRS OF PARALLEL CONNECTED CAPACITORS BEING A VARIABLE TRIMMER CAPACITOR, A UNI-DIRECTIONAL CURRENT MEANS ACROSS SAID FIRST MENTIONED PAIR OF PARALLEL CONNECTED CAPACITORS, AND ORIENTED FOR PASSING CURRENT TO GROUND, AND A UNI-DIRECTIONAL CURRENT MEANS ACROSS SAID OTHER PAIR OF PARALLEL COUPLED CAPACITORS AND ORIENTED FOR PASSING CURRENT AWAY FROM GROUND.
Claim 2
Dependent Claim
169 words
A CRYSTAL DISCRIMINATOR CIRCUIT COMPRISING A PAIR OF CRYSTALS, A PAIR OF INPUT TERMINALS, A PAIR OF OUTPUT TERMINALS, AND A GROUND TERMINAL, ONE OF THE TERMINALS OF SAID INPUT AND OUTPUT PAIRS COUPLED TO THE GROUND TERMINAL, A PAIR OF CAPACITORS ACROSS SAID INPUT TERMINALS, ONE OF SAID CRYSTALS IN SERIES WITH AN ADDER RESISTOR AND SAID OTHER INPUT AND OUTPUT TERMINALS OF SAID PAIRS, THE OTHER OF SAID CRYSTALS IN SERIES WITH ANOTHER ADDER RESISTOR AND SAID OTHER INPUT AND OUTPUT TERMINALS OF SAID PAIRS, A PAIR OF PARALLEL CONNECTED CAPACITORS COUPLED TO SAID ONE CRYSTAL AND GROUND, ANOTHER PAIR OF PARALLEL CONNECTED CAPACITORS COUPLED TO SAID OTHER CRYSTAL AND GROUND, ONE OF EACH OF SAID PAIRS OF PARALLEL CONNECTED CAPACITORS BEING A VARIABLE TRIMMER CAPACITOR, A UNI-DIRECTIONAL CURRENT MEANS ACROSS SAID FIRST MENTIONED PAIR OF PARALLEL CONNECTED CAPACITORS, AND ORIENTED FOR PASSING CURRENT TO GROUND, AND A UNI-DIRECTIONAL CURRENT MEANS ACROSS SAID OTHER PAIR OF PARALLEL COUPLED CAPACITORS AND ORIENTED FOR PASSING CURRENT AWAY FROM GROUND.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |