Patent US3572092A successfully refreshed from Google Patents.
US3572092A
Expired / Lapsed
US
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Pulsed hot wire system
Assignee: United States Department of the Air Force
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Filing: 1969-06-16
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Granted: 1971-03-23
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Expires: 1989-06-16
Abstract
Abstract AN APPARATUS FOR TESTING MICRO QUANTITIES OF BIOLOGICAL ORGANISMS OR CHEMICAL COMPOUNDS INCLUDING A CHAMBER HAVING A CONTROLLED ATMOSPHERE, A WIRE OR CONDUCTIVE FOIL MOUNTED IN THE CHAMBER FOR SUPPORTING A SPECIMEN AND CONNECTED ELECTRICALLY TO A VARIABLE PULSE GENERATOR AND A NULL BALANCED RESISTANCE BRIDGE WHERE THE TEMPERATURETIME HISTORY OF THE SPECIMEN CAN BE MAINTAINED AND MEASURED SIMULTANEOUSLY.
Inventors
- 👤 Louis Zernow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:45
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; B; B01; B01L; B01L7/00; G01N25/00; G01N25/20; G01N25/22; G01N25/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |