Patent US3180680A successfully refreshed from Google Patents.
US3180680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable chair with suspended book holder
Assignee: Individual
•
Filing: 1963-03-25
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Granted: 1965-04-27
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Expires: 1983-03-25
Abstract
No abstract record available.
Inventors
- 👤 Norman O Landvik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:47
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/04; A47C4/18; A47C4/20; A47C4/24; A47C7/00; A47C7/62; A47C7/622; A47C7/626
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN COMBINATION WITH A FOLDABLE CHAIR HAVING A SEAT PROVIDED WITH DOWNWARDLY DIRECTED MARGINAL FLANGES, A BOOK HOLDER COMPRISING: (A) A PANEL MEMBER HAVING UPWARDLY DIRECTED MARGINAL FLANGES AT ITS SIDES; (B) SAID UPWARDLY DIRECTED FLANGES BEING CLOSER TOGETHER THAN SAID DOWNWARDLY DIRECTED FLANGES AND HAVING A LESSER HEIGHT THAN SAID DOWNWARDLY DIRECTED FLANGES, AND (C) A PLURALITY OF LINK MEMBERS PIVOTALLY CONNECTED AT ONE END TO SAID DOWNWARDLY DIRECTED FLANGES NEARER
Claim 2
Dependent Claim
72 words
IN COMBINATION WITH A FOLDABLE CHAIR HAVING A SEAT PROVIDED WITH DOWNWARDLY DIRECTED MARGINAL FLANGES, A BOOK HOLDER COMPRISING: (A) A PANEL MEMBER HAVING UPWARDLY DIRECTED MARGINAL FLANGES AT ITS SIDES; (B) SAID UPWARDLY DIRECTED FLANGES BEING CLOSER TOGETHER THAN SAID DOWNWARDLY DIRECTED FLANGES AND HAVING A LESSER HEIGHT THAN SAID DOWNWARDLY DIRECTED FLANGES, AND (C) A PLURALITY OF LINK MEMBERS PIVOTALLY CONNECTED AT ONE END TO SAID DOWNWARDLY DIRECTED FLANGES NEARER
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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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |