US2487862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide follower for slide projectors
Assignee: Eastman Kodak Co
•
Filing: 1948-08-04
•
Granted: 1949-11-15
•
Expires: 1968-08-04
Abstract
No abstract record available.
Inventors
- 👤 Harold A Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:58
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; Y; Y10; Y10S; Y10S353/00; Y10S353/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1159681A
Cited
US2353888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |