Blank for constructing solid forms
Abstract
Abstract A BLANK FOR CONSTRUCTING SOLID FORMS. THE BLANK COMPRISES A STIFF PLANAR SHEET. THE SHEET HAS AT LEAST ONE POLYGONALLY SHAPED SECTION. EACH OF THE SECTIONS HAS A PLURALITY OF SLITS IN ACCORDANCE WITH THE NUMBER OF CORNERS OF THE POLYGON. EACH OF THE SLITS EMANATES FROM THE CENTER OF A POLYGON SECTION AND EXTENTS OUTWARDLY TOWARDS ONE OF THE CORNERS OF THE SECTIONS. THE OTHER ENDS OF THE SLITS ARE TERMINATED AT A CIRCULAR OPENING. THE BLANK HAS FASTENING ELEMENTS ON EACH OF ITS FREE EDGES WHICH ARE ADAPTED TO FACILIATE CONSTRUCTION OF A SOLID FORM. THE SLITS ENABLE THE SECUREMENT OF THE SOLID FORM TO ANOTHER SOLID FORM HAVING POLYGONALLY SHAPED SECTIONS WITH SIMILARLY FORMED SLITS.
Inventors
- 👤 Joel J Weissman
Bibliographic Details
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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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |