US3564787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular design block
Assignee: Individual
•
Filing: 1969-12-03
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Granted: 1971-02-23
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Expires: 1989-12-03
Abstract
Abstract EACH BLOCK OF A SET OF BLOCKS IS FORMED OF THE THREE SQUARE MEMBERS, EACH MEMBER LYING A PLANE PERPENDICULAR TO THE PLANES OF THE OTHER TWO MEMBERS. A FIRST MEMBER IS OFFSET FROM THE EDGES OF THE SECOND AND THIRD MEMBERS SO THAT THE FIRST MEMBER FORMS A T WITH THE SECOND MEMBER AND A T WITH THE THIRD MEMBER, WHILE THE SECOND AND THIRD MEMBERS HAVE AN EDGE IN COMMON AND FORM AN L WITH EACH OTHER. EACH MEMBER IS COLORED IN ACCORDANCE WITH A FIRST SCHEME ON ONE SIDE AND IN ACCORDANCE WITH A SECOND SCHEME ON THE OTHER SIDE. THE BLOCKS CAN BE NESTED TOGETHER TO FORM A MULTIPLICITY OF DIFFERENT PATTERNS.
Inventors
- 👤 Raymond Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:25
CPC Classifications
A; A47; A47C; A47C13/00; A47C13/005; A47B; A47B87/00; A47B87/02; A47B87/0207; A47B87/0253; A47D; A47D11/00; E; E04; E04B; E04B2/00; E04B2/02; E04B2/28; A47B2220/00; A47B2220/02
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 |