US3137757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the analysis of substances by absorption of radiation
Assignee: Sir Howard Grubb Parsons and Co Ltd
•
Filing: 1959-02-04
•
Granted: 1964-06-16
•
Expires: 1979-02-04
Abstract
No abstract record available.
Inventors
- 👤 Albert E Martin
- 👤 Shields John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1746525A
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US1919182A
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US2073223A
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US2408023A
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US2439373A
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US2503165A
Cited
US2605671A
Cited
US2941444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |