US3104491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reading stand
Assignee: Individual
•
Filing: 1959-07-06
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Granted: 1963-09-24
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Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Virgil M Sparkman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:20
CPC Classifications
A; A47; A47B; A47B23/00; A47B23/007; A47B23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A DEVICE FOR HOLDING AN OPEN BOOK IN READING POSITION HAVING A FRAME COMPRISING A VERTICAL BAR AND A HORIZONTAL BAR RIGIDLY CONNECTED INTERMEDIATE THEIR ENDS, AND MEANS ON EACH END OF SAID VERTICAL BAR FOR SECURING A BOOK THERETO, THE COMBINATION OF AN ANGULAR PAGE HOLDER ELEMENT ARRANGED ON EACH END OF SAID HORIZONTAL BAR AND ADJUSTABLE LONGITUDINALLY THEREOF, EACH OF SAID PAGE HOLDER ELEMENTS RIGIDLY EXTENDING OUTWARDLY AT RIGHT ANGLES FROM SAID HORIZONTAL BAR AND INWARDLY IN OPPOSING ARRANGEMENT WITH RESPECT TO THE OTHER, FIXED PAGE ENGAGING MEANS ON THE INNER SURFACES OF EACH OF SAID ELEMENTS, AND A SPRING TENSIONED SUPPORTING ELEMENT OPPOSING EACH OF SAID PAGE HOLDER ELEMENTS FOR YIELDABLY ENGAGING THE COVERS OF A BOOK AND BIASING THE PAGES THEREOF AGAINST SAID PAGE ENGAGING MEANS.
Claim 2
Dependent Claim
131 words
IN A DEVICE FOR HOLDING AN OPEN BOOK IN READING POSITION HAVING A FRAME COMPRISING A VERTICAL BAR AND A HORIZONTAL BAR RIGIDLY CONNECTED INTERMEDIATE THEIR ENDS, AND MEANS ON EACH END OF SAID VERTICAL BAR FOR SECURING A BOOK THERETO, THE COMBINATION OF AN ANGULAR PAGE HOLDER ELEMENT ARRANGED ON EACH END OF SAID HORIZONTAL BAR AND ADJUSTABLE LONGITUDINALLY THEREOF, EACH OF SAID PAGE HOLDER ELEMENTS RIGIDLY EXTENDING OUTWARDLY AT RIGHT ANGLES FROM SAID HORIZONTAL BAR AND INWARDLY IN OPPOSING ARRANGEMENT WITH RESPECT TO THE OTHER, FIXED PAGE ENGAGING MEANS ON THE INNER SURFACES OF EACH OF SAID ELEMENTS, AND A SPRING TENSIONED SUPPORTING ELEMENT OPPOSING EACH OF SAID PAGE HOLDER ELEMENTS FOR YIELDABLY ENGAGING THE COVERS OF A BOOK AND BIASING THE PAGES THEREOF AGAINST SAID PAGE ENGAGING MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |