US2447208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensometer for indicating percent elongation
Assignee: Carnegie Illinois Steel Corp
•
Filing: 1945-05-17
•
Granted: 1948-08-17
•
Expires: 1965-05-17
Abstract
No abstract record available.
Inventors
- 👤 George H Rendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:40
CPC Classifications
G; G01; G01B; G01B21/00; G01B21/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1686638A
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US1612117A
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US1510440A
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US1655244A
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US1897472A
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US2205330A
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US2211657A
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US2248504A
Cited
US2339612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-17 | 1952-02-16 | 1952-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-17 | 1956-02-16 | 1956-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-17 | 1960-02-16 | 1960-08-17 | $7700.00 | Window Closed / Lapsed |