Patent US3570170A successfully refreshed from Google Patents.
US3570170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toy block with internal lattice and lobes
Assignee: Individual
•
Filing: 1968-11-13
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Granted: 1971-03-16
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Expires: 1988-11-13
Abstract
Abstract A TOY BUILDING BLOCK HAS A RECTANGULAR BOX-LIKE BODY WITH OPEN BOTTON AND INTEGRAL TOP AND SIDE WALLS. PROJECTIONS EXTEND OUTWARDLY FROM THE TOP WALL. RIBS INSIDE THE BODY ARE JOINED TO EACH OTHER AND TO THE WALLS OF THE BODY AT RIGHT ANGLES TO DEFINE RECTANGULAR CELLS. CYLINDRICAL LOBES INTEGRALLY FORMED WITH THE RIBS EXTENDING LATERALLY INTO ADJACENT CELLS. EDGES OF THE RIBS ARE COPLANAR AND SPACED INWARDLY OF THE FLAT BOTTOM EDGE OF THE BODY OF THE BLOCK. THE LOBES HAVE FREE CYLINDRICAL END PORTIONS EXTENDING BEYOND THE RIBS AND TERMINATING SHORT OF THE PLANE OF THE BOTTOM EDGE OF THE BODY OF THE BLOCK.
Inventors
- 👤 Yoshihiro Kishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:22
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/08; A63H33/086
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |