US2995060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the optical determination of stresses
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1955-11-28
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Granted: 1961-08-08
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Acloque Paul Henri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:54
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/16; G01B11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE378833C
Cited
US1875665A
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US2119577A
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US2239263A
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US2457799A
Cited
US2460515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |