Patent US3562940A successfully refreshed from Google Patents.
US3562940A
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Assignee: GRAPHIC CALCULATOR Co
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Filing: 1968-09-23
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Granted: 1971-02-16
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Expires: 1988-09-23
Abstract
Abstract THE ESSENTIAL CONCEPT OF THIS INVENTION INVOLVES THIN, FLEXIBLE, PLANAR, SCORED MATERIAL FOLDED TO FORM A SERIES OF SUPERIMPOSED, HINGED, OPEN-END POCKETS EACH SLIDABLY EMBRACING A COMPARABLE THIN, FLEXIBLE, PLANAR STRIP, THE EXPOSED PORTIONS OF WHICH RESPECTIVE POCKET AND STRIP PARTS HAVE PRINTED THEREON RELATED INDICIA AND DATE WHEREBY THE SHIFTING OF THE STRIPS IN THE POCKETS JUXTAPOSES THE INDICIA AND DATA SO AS TO PERMIT DETERMINING A VARIETY OF DESIRED FACTORS.
Inventors
- 👤 Capron R Gulbransen Sr
- 👤 Jerre G Kneip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:36
CPC Classifications
G; G06; G06C; G06C3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |