Patent US3192842A successfully refreshed from Google Patents.
US3192842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for photocopying book pages
Assignee: Individual
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Filing: 1961-07-13
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Granted: 1965-07-06
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Robert L Heiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:53
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/08; G03C5/10; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A BOOK COPIER COMPRISING A THIN FLAT PANEL HAVING SUBSTANTIALLY PARALLEL SIDES FORMED OF MATERIAL HAVING THE OPTICAL CHARACTERISTICS OF POLYMERIZED METHYL METHACRYLATE, A LINEAR SOURCE OF LIGHT EXTENDING ALONG ONE EDGE OF SAID PANEL, ONE OF SAID SUBSTANTIALLY PARALLEL SIDES BEING ROUGH AND THE OTHER OF SAID SUBSTANTIALLY PARALLEL SIDES BEING POLISHED, SAID SUBSTANTIALLY PARALLEL SIDED PANEL BEING SUFFICIENTLY THIN TO BE RECEIVED BETWEEN THE LEAVES OF A CLOSED BOOK ADJACENT THE BINDING THEREOF AND INDUCE NO SIGNIFICANT CURVATURE, WITH REFERENCE TO PHOTOCOPYING, IN THE PRINTER PORTION OF THE LEAF WHICH SAID ROUGH SIDE FACES.
References Cited (Backward Citations)
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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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |