US3837652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid puzzle
Assignee: Nippon Cloth Ind Co Ltd
•
Filing: 1973-05-01
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Granted: 1974-09-24
•
Expires: 1993-05-01
Abstract
Abstract A solid puzzle of regular geometrical configuration consists of a number of layers of identical spheres, each of said layers including several kinds of connected units of spheres having connecting axes extending through the centers of the individual spheres, all of the connecting axes being on the same plane and any of two adjoining axes forming an included angle of 60*, 90*, 120* or 180*.
Inventors
- 👤 A Kuwagaki
- 👤 S Takenaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:52
CPC Classifications
A; A63; A63F; A63F9/00; A63F9/06; A63F9/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A solid puzzle consisting of the five connected units of spheres as illustrated in FIG. 2, assemblable into the structure illustrated in FIG. 4.
Claim 2
Dependent Claim
24 words
A solid puzzle consisting of the five connected units of spheres as illustrated in FIG. 2, assemblable into the structure illustrated in FIG. 4.
Claim 3
Dependent Claim
26 words
A solid puzzle consisting of the eleven connected units of spheres as illustrated in FIG. 6, assemblable into the structure illustrated in FIGS. 8 and 9.
Claim 4
Dependent Claim
26 words
A solid puzzle consisting of the eleven connected units of spheres as illustrated in FIG. 6, assemblable into the structure illustrated in FIGS. 8 and 9.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |