Patent US3013470A successfully refreshed from Google Patents.
US3013470A
Expired / Lapsed
US
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Wedge structure for a double beam spectrophotometer
Assignee: Texaco Inc
•
Filing: 1958-07-31
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Granted: 1961-12-19
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Expires: 1978-07-31
Abstract
No abstract record available.
Inventors
- 👤 William A Pliskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:13
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/22; G01J1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675740A
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US2120654A
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US2148508A
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US2311159A
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US2410550A
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US2384578A
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US2711560A
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US2708389A
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US2817769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |