US3498694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical interference filter means bombarded by crt beam for selectively passing monochromatic light
Assignee: ANACOMP Inc 11550 NORTH MERIDAN STREET CARMEL INDIANA 46032 A CORP OF INDIANA
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Filing: 1966-09-23
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Granted: 1970-03-03
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Expires: 1986-09-23
Abstract
No abstract record available.
Inventors
- 👤 Omer F Hamann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:28
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/285; G02F; G02F1/00; G02F1/01; G02F1/21; H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/12; H04; H04N; H04N5/00; H04N5/74; H04N5/7416; H04N5/7425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2289205A
Cited
US3238843A
Cited
US3218390A
Cited
US3164665A
Cited
US3379998A
Cited
US3317664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |