US2394930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of mirrors by thermal evaporation
Assignee: Eastman Kodak Co
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Filing: 1943-07-03
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Granted: 1946-02-12
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Expires: 1963-07-03
Abstract
No abstract record available.
Inventors
- 👤 Daniel B Mcrae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:46
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/02; C23C14/021; C23C14/06; C23C14/14; C23C14/18; C23C14/58; C23C14/5806
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) | 1949-02-11 | 1949-08-13 | 1950-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-11 | 1953-08-13 | 1954-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-11 | 1957-08-13 | 1958-02-12 | $7700.00 | Window Closed / Lapsed |