US2464141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror with low thermal expansion support
Assignee: Eastman Kodak Co
•
Filing: 1946-07-13
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Granted: 1949-03-08
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Expires: 1966-07-13
Abstract
No abstract record available.
Inventors
- 👤 Martin S Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/18; G02B7/182; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12771; Y10T428/12861; Y10T428/12993
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191316509A
Cited
US1027426A
Cited
DE332653C
Cited
US2218270A
Cited
US2400111A
Cited
US2375669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |