Patent US5235434A successfully refreshed from Google Patents.
US2477908A
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US
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Instrument for measuring impact strength of materials
Assignee: Wyeth Holdings LLC
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Filing: 1944-11-15
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Granted: 1949-08-02
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Expires: 1964-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charles R Stock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:26
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1329192A
Cited
US1636234A
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CH125027A
Cited
US2133308A
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US2200028A
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US2294511A
Cited
US2281324A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |