Patent US3727115A successfully refreshed from Google Patents.
US2831340A
Expired / Lapsed
US
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Self-calibrating dilatometer for high temperature use
Assignee: Individual
•
Filing: 1952-07-16
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Granted: 1958-04-22
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Expires: 1972-07-16
Abstract
No abstract record available.
Inventors
- 👤 William B Crandall
- 👤 Lieberman Alvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:57
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2122818A
Cited
US2213088A
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FR870813A
Cited
US2351955A
Cited
US2351572A
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US2397971A
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US2580498A
Cited
US2596752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |