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Patent US3004664A successfully refreshed from Google Patents.
US3004664A
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Method and apparatus for optical analysis of a mixture of substances
Assignee: General Precision Inc
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Filing: 1957-07-09
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Granted: 1961-10-17
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Expires: 1977-07-09
Abstract
No abstract record available.
Inventors
- 👤 Marc G Dreyfus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/02; G01N33/08; G01N33/085; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/314
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2436262A
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US2547212A
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US2620444A
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US2678581A
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US2737591A
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US2823800A
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US2700321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |