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US2291267A
Expired / Lapsed
US
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Apparatus for producing and applying silvering substances
Assignee: Individual
•
Filing: 1940-01-30
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Granted: 1942-07-28
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Expires: 1960-01-30
Abstract
No abstract record available.
Inventors
- 👤 Harold L Weiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:54
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/06; C03C17/10; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1619; C23C18/1632; C23C18/1633; C23C18/1655; C23C18/1658; C23C18/166; C23C18/1664; C23C18/1669; C23C18/31; C23C18/42; C23C18/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-07-27 | 1946-01-26 | 1946-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-27 | 1950-01-26 | 1950-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-27 | 1954-01-26 | 1954-07-28 | $7700.00 | Window Closed / Lapsed |