Patent US2843009A successfully refreshed from Google Patents.
US2843009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable episcopic illumination for the contour projector
Assignee: Eastman Kodak Co
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Filing: 1954-10-14
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Granted: 1958-07-15
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Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Bert V Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:10
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1840448A
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US1935444A
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US1943509A
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US1996920A
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US2004806A
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US2103230A
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US2155248A
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US2625076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |