US2782369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Determination of contamination of liquid metals
Assignee: Callery Chemical Co
•
Filing: 1953-05-04
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Granted: 1957-02-19
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Expires: 1973-05-04
Abstract
No abstract record available.
Inventors
- 👤 Robert C Werner
- 👤 Shelby L Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/02; G01N27/00; G01N27/72; G01N27/74; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |