US3051049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catadioptric objective
Assignee: Bell and Howell Co
•
Filing: 1959-03-02
•
Granted: 1962-08-28
•
Expires: 1979-03-02
Abstract
No abstract record available.
Inventors
- 👤 Walter R Linke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:51
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0856
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2642488A
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US2866374A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |