Patent US2903564A successfully refreshed from Google Patents.
US2903564A
Expired / Lapsed
US
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Method of providing a wear resistant surface
Assignee: EDWARD VALVES Inc
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Filing: 1953-03-17
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Granted: 1959-09-08
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Expires: 1973-03-17
Abstract
No abstract record available.
Inventors
- 👤 Laurence H Carr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:08
CPC Classifications
F; F16; F16K; F16K25/00; F16K25/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/4927; Y10T29/49272
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1499172A
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US1732241A
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US1881934A
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US2202405A
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US2306180A
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US2293247A
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US2265725A
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US2358090A
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US2396552A
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US2426746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |