US2434149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical glass
Assignee: Eastman Kodak Co
•
Filing: 1945-08-04
•
Granted: 1948-01-06
•
Expires: 1965-08-04
Abstract
No abstract record available.
Inventors
- 👤 Paolis Paul F De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/15; C03C3/155; C03C3/04; C03C3/062; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21175E
Cited
US2241249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |