US2542928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing material
Assignee: CJ Patterson Co
•
Filing: 1947-04-26
•
Granted: 1951-02-20
•
Expires: 1967-04-26
Abstract
No abstract record available.
Inventors
- 👤 Charles N Kimball
- 👤 William R Lewis
- 👤 Herman A Strecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2407270A
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US2343340A
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US2428700A
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US2460199A
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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) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |