US2948183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic liquid feeding system in a flame spectrophotometer
Assignee: Union Carbide Corp
•
Filing: 1956-05-22
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Granted: 1960-08-09
•
Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Maloy
- 👤 Frederick L Boggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:18
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/72; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1346898A
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US2483450A
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US2433599A
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US2532687A
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US2714833A
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US2642891A
Cited
US2753753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |