US2439654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of silvering surfaces
Assignee: Libbey Owens Ford Glass Co
•
Filing: 1943-09-18
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Granted: 1948-04-13
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Expires: 1963-09-18
Abstract
No abstract record available.
Inventors
- 👤 Romey A Gaiser
- 👤 Paul T Mattimoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/42; C23C18/44; C23C18/1601; C23C18/1633; C23C18/1655; C23C18/1658; C23C18/166; C23C18/1675; C23C18/1678; C23C18/18; C23C18/20; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/2086; C23C18/28; C23C18/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1941438A
Cited
US2118795A
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US2026086A
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US2264152A
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US2303871A
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US2333534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |