USRE28016E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical scanner and slit exposure device for reproduction apparatus
Assignee: —
•
Filing: 1972-04-19
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Granted: 1974-05-21
•
Expires: 1992-04-19
Abstract
Abstract AN OPTICAL SCANNING SYSTEM FOR USE IN A DOCUMENT COPYING APPARATUS. PHOTOSENSITIVE PAPER IS EXPOSED BY THE IMAGE OF AN ORIGINAL DOCUMENT. LIGHT FROM THE ORIGINAL DOCUMENT IS REFLECTED BY TWO MOVING MIRRORS THROUGH A FIXED LENS AND IS PROJECTED THROUGH A SLIT UPON PHOTOSENSITIVE PAPER WHICH IS MOVED IN A COORDINATION WITH THE MOVEMENT OF THE TWO REFLECTING MIRRORS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:53
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/522; G03B27/525; G03B27/526; G03G; G03G15/00; G03G15/22; G03G15/28
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |