Patent US3557463A successfully refreshed from Google Patents.
US3557463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Loose leaf stencil folder for layout design
Assignee: Individual
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Filing: 1968-05-17
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Granted: 1971-01-26
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Expires: 1988-05-17
Abstract
Abstract A LOOSE LEAF BINDER IS PROVIDED, HAVING THREE BINDER ELEMENTS MOUNTED ALONG THREE EDGES OF A FRAME MEMBER. A DRAWING BOARD IS HINGED TO ONE SIDE OF THE FRAME AND IS ADAPTED TO RECEIVE LAYOUT SHEETS. THREE SETS OF LOOSE LEAF LAYOUT STENCILS ARE SECURED TO THE THREE BINDER ELEMENTS, AND INDIVIDUAL STENCILS MAY BE SELECTIVELY FOLDED OVER THE DRAWING BOARD. IN ONE EMBODIMENT, TWO SETS OF THE STENCILS EACH COVER ONE-HALF OF THE BOARD, WHILE THE THIRD SET COVERS THE FULL BOARD. BY SELECTION OF THE APPROPRIATE STENCILS, ANY DESIRED LAYOUT COMBINATIONS MAY BE OBTAINED.
Inventors
- 👤 Charles R Perry
- 👤 James C Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:17
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |