US3564758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polygonal building elements with connectors therefor for assembling toy structures
Assignee: Individual
•
Filing: 1968-09-04
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Granted: 1971-02-23
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Expires: 1988-09-04
Abstract
Abstract FLAT DISC ELEMENTS IN THE FORM OF REGULAR POLYGONS HAVE RADIAL NOTCHES AT CORNERS THEREOF TO INTERFIT AND INTERLOCK FOR FORMING TOY GEOMETRIC STRUCTURES OF VARIOUS SHAPES. NOTCHES MAY HAVE PROJECTIONS TO ENGAGE IN HOLES IN INTERFITTED DISCS. WEBS WITH MULTIPLE ARMS ARE ALSO PROVIDED FOR ENGAGING CORNERS OF A PLURALITY OF POLYGONAL ELEMENTS TO FORM POLYHEDRONS.
Inventors
- 👤 Arthur N Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:45
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |