US2660086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for coordinating operating wave length and slit size in spectrophotometers
Assignee: Standard Oil Co
•
Filing: 1951-04-19
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Granted: 1953-11-24
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Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Robert W Foreman
- 👤 Melvin M Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:37
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/1804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2499322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |