US2562181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for detecting cloudiness of transparent material
Assignee: Individual
•
Filing: 1948-11-05
•
Granted: 1951-07-31
•
Expires: 1968-11-05
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Frommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/49; G01N21/53; G01N21/534
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE705975C
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US2268133A
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US2254548A
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US2287322A
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US2339053A
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US2402926A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |