Patent US2968217A successfully refreshed from Google Patents.
US2968217A
Expired / Lapsed
US
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Lens adjusting means for stereo projectors
Assignee: Eastman Kodak Co
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Filing: 1957-04-09
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Granted: 1961-01-17
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Expires: 1977-04-09
Abstract
No abstract record available.
Inventors
- 👤 William P Ewald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:23
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/18; G03B35/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB622816A
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US2493463A
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DE827721C
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US2580874A
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US2598573A
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US2700322A
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US2653511A
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US2612818A
Cited
US2914985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |