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 14:44
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)
US1423741A
Cited
US2386903A
Cited
US2484585A
Cited
US2797296A
Cited
US2840679A
Cited
US2955185A
Cited
US3079484A
Cited
US3158821A
Cited
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 |