Patent US2243973A successfully refreshed from Google Patents.
US3560091A
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High pressure optical cell
Assignee: High Pressure Diamond Optics Inc
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Filing: 1968-04-12
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Granted: 1971-02-02
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Expires: 1988-04-12
Abstract
Abstract A HIGH PRESSURE OPTICAL CELL HAS AN INSERT AND TEMPERAATURE VARYING MEANS FOR THE MATERIAL TESTED, WHICH MAY BE A COIL WITHIN THE INSERT OF INSULATING MATERIAL OR A LASER BEAM WITH OPTICAL MEANS FOR OBSERVATION OF THE MATERIAL.
Inventors
- 👤 Alvin Van Valkenburg
- 👤 Ellis R Lippincott
- 👤 Charles E Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:17
CPC Classifications
F; F27; F27B; F27B17/00; F27B17/02; G; G01; G01N; G01N21/00; G01N21/01; G01N21/03; G01N21/0317
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |