Patent US3412502A successfully refreshed from Google Patents.
US3412502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow reinforced nestable building block
Assignee: CLAY E RICHES
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Filing: 1966-06-02
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Granted: 1968-11-26
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Expires: 1986-06-02
Abstract
No abstract record available.
Inventors
- 👤 Clay E Riches
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:21
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06; A63H33/08; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A UNITARY BUILDING BLOCK COMPRISING TWO SIMILAR CONGRUOUS TRAY ELEMENTS SIDE WALLS AND HAVING SUBSTANTIALLY FLAT BOTTOM WALLS, UNITED BY A FLEXIBLE HINGE ALONG A COMMON BOUNDARY LINE, SAID TRAY ELEMENTS HAVING SUBSTANTIALLY THE SAME OVERALL DIMENSIONS, EACH TRAY ELEMENT BEING PROVIDED WITH AN UPSTANDING STRUCTURAL HOLLOW STRUT ELEMENT LESS THAN TWICE THE HEIGHT OF SAID SIDE WALLS TO GIVE SUPPORT TO THE BOTTOM WALL OF THE OTHER TRAY ELEMENT WHEN SAID TWO TRAY ELEMENTS ARE FOLDED TOGETHER.
Claim 2
Dependent Claim
78 words
A UNITARY BUILDING BLOCK COMPRISING TWO SIMILAR CONGRUOUS TRAY ELEMENTS SIDE WALLS AND HAVING SUBSTANTIALLY FLAT BOTTOM WALLS, UNITED BY A FLEXIBLE HINGE ALONG A COMMON BOUNDARY LINE, SAID TRAY ELEMENTS HAVING SUBSTANTIALLY THE SAME OVERALL DIMENSIONS, EACH TRAY ELEMENT BEING PROVIDED WITH AN UPSTANDING STRUCTURAL HOLLOW STRUT ELEMENT LESS THAN TWICE THE HEIGHT OF SAID SIDE WALLS TO GIVE SUPPORT TO THE BOTTOM WALL OF THE OTHER TRAY ELEMENT WHEN SAID TWO TRAY ELEMENTS ARE FOLDED TOGETHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |