Patent US3958190A successfully refreshed from Google Patents.
US3958190A
Expired / Lapsed
US
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Low harmonic crystal oscillator
Assignee: Motorola Solutions Inc
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Filing: 1975-03-31
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Granted: 1976-05-18
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Expires: 1995-03-31
Abstract
Abstract A colpitts oscillator having a tank circuit and a common base connected transistor, operating in a linear range, with an emitter-base junction coupled in the tank circuit and a load in the collector circuit thereof for passing current through the load at the frequency of the tank circuit.
Inventors
- 👤 Morris L. Minch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:52
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/366; H03B5/368; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/22; H03C3/222; H03B2200/00; H03B2200/0002; H03B2200/0008; H03B2200/003; H03B2200/004; H03B5/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A low harmonic, crystal oscillator comprising: a. an electronic tank circuit tuned to a predetermined frequency and including an inductance, a plurality of capacitors and a crystal; b. a transistor connected to said tank circuit to form a colpitts type oscillator; and c. a common base transistor circuit connected to operate in a linear range and including a transistor with an emitter-base junction forming a portion of said tank circuit and a collector adapted to have a load connected thereto for passing current therethrough at the predetermined frequency.
Claim 2
Dependent Claim
88 words
A low harmonic, crystal oscillator comprising: a. an electronic tank circuit tuned to a predetermined frequency and including an inductance, a plurality of capacitors and a crystal; b. a transistor connected to said tank circuit to form a colpitts type oscillator; and c. a common base transistor circuit connected to operate in a linear range and including a transistor with an emitter-base junction forming a portion of said tank circuit and a collector adapted to have a load connected thereto for passing current therethrough at the predetermined frequency.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |