US3338680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensating system
Assignee: Bausch and Lomb Inc
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Filing: 1963-04-01
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Granted: 1967-08-29
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Alexander E Martens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:27
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/30; H01H43/308; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1927; G05D23/1928; G05D23/1951; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING, IN COMBINATION, A CHAMBER HAVING TEMPERATURE CONTROL WITHIN NARROW LIMITS, A FREQUENCY GENERATING DEVICE FOR GENERATING ELEMENT IN SAID CHAMBER CAUSING A VARIATION IN THE SITIVE ELEMENT IN SAID CHAMBER CAUSING A VARIATION IN THE FREQUENCY OF OSCILLATION RESPONSIVE TO TEMPERATURE VARIATIONS IN SAID CHAMBER, AN AMPLIFIER CONNECTED TO SAID FACQUENCY GENERATOR FOR AMPLIFYING THE OSCILLATING SIGNAL, FREQUENCY RESPONSIVE TIMING MEANS HAVING AN OUTPUT RELATED TO THE FREQUENCY OF AN ELECTRICAL SIGNAL APPLIED THERETO CONNECTED TO SAID AMPLIFIER TO OPERATE A CONTROL
Claim 2
Independent Claim
89 words
A DEVICE OF THE CHARACTER DESCRIBED COMPRISING, IN COMBINATION, A CHAMBER HAVING TEMPERATURE CONTROL WITHIN NARROW LIMITS, A FREQUENCY GENERATING DEVICE FOR GENERATING ELEMENT IN SAID CHAMBER CAUSING A VARIATION IN THE SITIVE ELEMENT IN SAID CHAMBER CAUSING A VARIATION IN THE FREQUENCY OF OSCILLATION RESPONSIVE TO TEMPERATURE VARIATIONS IN SAID CHAMBER, AN AMPLIFIER CONNECTED TO SAID FACQUENCY GENERATOR FOR AMPLIFYING THE OSCILLATING SIGNAL, FREQUENCY RESPONSIVE TIMING MEANS HAVING AN OUTPUT RELATED TO THE FREQUENCY OF AN ELECTRICAL SIGNAL APPLIED THERETO CONNECTED TO SAID AMPLIFIER TO OPERATE A CONTROL
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |