Patent US3165290A successfully refreshed from Google Patents.
US3165290A
Expired / Lapsed
US
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Easel
Assignee: S E OVERTON CO
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Filing: 1963-03-14
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Granted: 1965-01-12
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Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Charles F Overton
- 👤 Lawrence J Nook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:17
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/14; A47G1/142; A47G1/143
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN EASEL BACK INCLUDING A BACK PLATE, AND A PROP; A CONNECTION BETWEEN SAID PLATE AND PROP ALLOWING PROP EXTENSION AND A COLLAPSE, INCLUDING A FIRST LINK ATTACHED TO ONE OF SAID PLATE AND PROP AND HAVING A HORIZONTALLY ELONGATED CONVEX SURFACE, A SECOND LINK ATTACHED TO THE OTHER OF SAID PLATE AND PROP AND HAVING A HORIZONTALLY ELONGATED CONCAVE SURFACE INTERFITTING ON SAID CONVEX SURFACE; SAID CONCAVE SURFACE HAVING A SMALLER ARCUATE LENGTH THAN THAT OF SAID CONVEX SURRACE ALLOWING ARCUATE MOVEMENT THEREBETWEEN FOR COLLAPSING AND EXTENDING OF SAID PROP WITH RESPECT TO SAID FRAME.
Claim 2
Dependent Claim
96 words
AN EASEL BACK INCLUDING A BACK PLATE, AND A PROP; A CONNECTION BETWEEN SAID PLATE AND PROP ALLOWING PROP EXTENSION AND A COLLAPSE, INCLUDING A FIRST LINK ATTACHED TO ONE OF SAID PLATE AND PROP AND HAVING A HORIZONTALLY ELONGATED CONVEX SURFACE, A SECOND LINK ATTACHED TO THE OTHER OF SAID PLATE AND PROP AND HAVING A HORIZONTALLY ELONGATED CONCAVE SURFACE INTERFITTING ON SAID CONVEX SURFACE; SAID CONCAVE SURFACE HAVING A SMALLER ARCUATE LENGTH THAN THAT OF SAID CONVEX SURRACE ALLOWING ARCUATE MOVEMENT THEREBETWEEN FOR COLLAPSING AND EXTENDING OF SAID PROP WITH RESPECT TO SAID FRAME.
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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |