US2443196A
Expired / Lapsed
US
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Process for making front-surface mirrors
Assignee: Individual
•
Filing: 1944-06-16
•
Granted: 1948-06-15
•
Expires: 1964-06-16
Abstract
No abstract record available.
Inventors
- 👤 Raines Arnold
- 👤 Raymond W Boydston
- 👤 Allen J Eshner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/06; C03C17/09; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/263; C03C2218/00; C03C2218/10; C03C2218/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18908E
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US2293206A
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US2333534A
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US2301456A
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US2394930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |