US3128573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable book holder
Assignee: Individual
•
Filing: 1962-09-28
•
Granted: 1964-04-14
•
Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Lester C Johnson
- 👤 Lester E Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:02
CPC Classifications
A; A47; A47B; A47B23/00; A47B23/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A BOOK HOLDER COMPRISING A PAIR OF END STANDARDS, OF GENERALLY TRIANGULAR OUTLINE, A SHELF CARRIED BY EACH STANDARD, MEDIALLY OF ITS HEIGHT, A MEMBER SECURED TO EACH STANDARD AT ITS UPPER END, AND TO SAID SHELF IN SPACED RELATION TO THE STANDARD, AND DISPOSED AT AN ANGLE THEREWITH, EACH SAID MEMBER HAVING AN ELONGATE SLOT, A TIE ROD CONNECTING SAID BLOCKS, IN A POSITION WITH SAID MEMBERS MUTUALLY PARALLEL, AND SAID STANDARDS CONVERGING UPWARDLY, A BOOK-HOLDING PLATE HAVING A PAIR OF BLOCKS EXTENDING FROM ONE FACE, NEAR OPPOSITE ENDS OF THE PLATE, PIVOT BOLTS CARRIED BY SAID LATTER BLOCKS, AND ADAPTED TO BE RECEIVED IN THE SLOTS IN THE RESPECTIVE, SAID MEMBERS, A WING NUT TO SECURE EACH BOLT IN POSITION IN ITS RECEIVING SLOT, A PAIR OF SPRING CLIPS CARRIED BY SAID PLATE IN CORNER AREAS, AND A PAIR OF STRAPS HAVING HOOKED ENDS RECEIVED OVER EDGES OF SAID PLATE, SAID PLATE HAVING PARALLEL GROOVES IN SAID ONE FACE, AND SAID HOOKED ENDS HAVING BENT, TERMINAL EDGES RECEIVED IN SAID GROOVES, SAID STRAPS
Claim 2
Dependent Claim
175 words
A BOOK HOLDER COMPRISING A PAIR OF END STANDARDS, OF GENERALLY TRIANGULAR OUTLINE, A SHELF CARRIED BY EACH STANDARD, MEDIALLY OF ITS HEIGHT, A MEMBER SECURED TO EACH STANDARD AT ITS UPPER END, AND TO SAID SHELF IN SPACED RELATION TO THE STANDARD, AND DISPOSED AT AN ANGLE THEREWITH, EACH SAID MEMBER HAVING AN ELONGATE SLOT, A TIE ROD CONNECTING SAID BLOCKS, IN A POSITION WITH SAID MEMBERS MUTUALLY PARALLEL, AND SAID STANDARDS CONVERGING UPWARDLY, A BOOK-HOLDING PLATE HAVING A PAIR OF BLOCKS EXTENDING FROM ONE FACE, NEAR OPPOSITE ENDS OF THE PLATE, PIVOT BOLTS CARRIED BY SAID LATTER BLOCKS, AND ADAPTED TO BE RECEIVED IN THE SLOTS IN THE RESPECTIVE, SAID MEMBERS, A WING NUT TO SECURE EACH BOLT IN POSITION IN ITS RECEIVING SLOT, A PAIR OF SPRING CLIPS CARRIED BY SAID PLATE IN CORNER AREAS, AND A PAIR OF STRAPS HAVING HOOKED ENDS RECEIVED OVER EDGES OF SAID PLATE, SAID PLATE HAVING PARALLEL GROOVES IN SAID ONE FACE, AND SAID HOOKED ENDS HAVING BENT, TERMINAL EDGES RECEIVED IN SAID GROOVES, SAID STRAPS
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |