US2913584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microspectrographic system
Assignee: LEO T RATIGAN
•
Filing: 1955-04-18
•
Granted: 1959-11-17
•
Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 James M Dill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2522528A
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US2543793A
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US2534843A
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US2494441A
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US2568543A
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US2755408A
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US2716193A
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US2797256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |