Patent US2435273A successfully refreshed from Google Patents.
US2435273A
Expired / Lapsed
US
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Method of coating with tungsten carbide
Assignee: Individual
•
Filing: 1942-07-14
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Granted: 1948-02-03
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Expires: 1962-07-14
Abstract
No abstract record available.
Inventors
- 👤 Hatfield Henry Stafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:16
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; B; B23; B23K; B23K15/00; B23K15/0046; B23K15/0086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1965582A
Cited
US2103623A
Cited
US2143723A
Cited
US2157498A
Cited
US2153786A
Cited
GB510404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |