US3549254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system
Assignee: ANACOMP Inc 11550 NORTH MERIDAN STREET CARMEL INDIANA 46032 A CORP OF INDIANA
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Filing: 1968-10-23
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Granted: 1970-12-22
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Expires: 1988-10-23
Abstract
No abstract record available.
Inventors
- 👤 Max K Muir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:21
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/26; G03B; G03B17/00; G03B17/24; G03B17/245; G03B27/00; G03B27/32; G03B27/46; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2563892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |