US2428433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strain measuring apparatus
Assignee: Waugh Equipment Co
•
Filing: 1943-11-17
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Granted: 1947-10-07
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Expires: 1963-11-17
Abstract
No abstract record available.
Inventors
- 👤 Nereus H Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:49
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2287
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2252464A
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US2373676A
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US2340146A
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US2350073A
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US2344648A
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US2363181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-06 | 1951-04-07 | 1951-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-06 | 1955-04-07 | 1955-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-06 | 1959-04-07 | 1959-10-07 | $7700.00 | Window Closed / Lapsed |