Patent US2674874A successfully refreshed from Google Patents.
US2674874A
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Apparatus for applying predetermined loads to objects for testing hardness
Assignee: Vinters Armstrongs Ltd
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Filing: 1951-01-24
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Granted: 1954-04-13
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Expires: 1971-01-24
Abstract
No abstract record available.
Inventors
- 👤 Jones James Thomas Eycott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:39
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/42; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7858
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191023217A
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US1367133A
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FR546374A
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US1593838A
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US1668453A
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FR771662A
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US2297778A
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US2344133A
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US2371553A
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US2422237A
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US2536880A
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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) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |