US3243572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportionally controlled crystal oven
Assignee: Individual
•
Filing: 1964-02-10
•
Granted: 1966-03-29
•
Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Gunther A Vogt
- 👤 John C Alderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A CRYSTAL OVEN DEVICE; A SPRING CLIP STRUCTURE ADAPTED TO REMOVABLY EMBRACE A CRYSTAL HOUSING IN HEAT CONDUCTIVE RELATION THERETO; TEMPERATURE CONTROL MEANS CARRIED BY SAID STRUCTURE AND INCLUDING A HEATING RESISTOR IN HEAT CONDUCTIVE RELATION TO SAID CLIP STRUCTURE; SAID CONTROL MEANS INCLUDING CIRCUIT MEANS FOR CONTROLLING THE FLOW OF CURRENT THROUGH SAID RESISTOR AND INCLUDING A THERMISTOR ARRANGED WITH A PORTION THEREOF IN HEAT CONDUCTIVE RELATION TO SAID RESISTOR, ANOTHER PORTION OF SAID THERMISTOR BEING EXPOSED TO AMBIENT TEMPERATURE.
Claim 2
Dependent Claim
82 words
IN A CRYSTAL OVEN DEVICE; A SPRING CLIP STRUCTURE ADAPTED TO REMOVABLY EMBRACE A CRYSTAL HOUSING IN HEAT CONDUCTIVE RELATION THERETO; TEMPERATURE CONTROL MEANS CARRIED BY SAID STRUCTURE AND INCLUDING A HEATING RESISTOR IN HEAT CONDUCTIVE RELATION TO SAID CLIP STRUCTURE; SAID CONTROL MEANS INCLUDING CIRCUIT MEANS FOR CONTROLLING THE FLOW OF CURRENT THROUGH SAID RESISTOR AND INCLUDING A THERMISTOR ARRANGED WITH A PORTION THEREOF IN HEAT CONDUCTIVE RELATION TO SAID RESISTOR, ANOTHER PORTION OF SAID THERMISTOR BEING EXPOSED TO AMBIENT TEMPERATURE.
References Cited (Backward Citations)
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |