US2952180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual optical instrument having a combined reticle and field flattening element
Assignee: Eastman Kodak Co
•
Filing: 1958-06-02
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Granted: 1960-09-13
•
Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Cameron B Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:21
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/14; G02B27/00; G02B27/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE373755C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |