Patent US2628393A successfully refreshed from Google Patents.
US2628393A
Expired / Lapsed
US
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Method and apparatus for coating metallic objects
Assignee: Knapp Mills Inc
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Filing: 1950-05-16
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Granted: 1953-02-17
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Expires: 1970-05-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred P Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:02
CPC Classifications
C; C23; C23C; C23C2/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193324A
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US915021A
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US1029877A
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US1123174A
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US1830652A
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US1779253A
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US2044897A
Cited
US2195613A
Cited
US2298348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |