US3840234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amusement device
Assignee: Individual
•
Filing: 1971-09-08
•
Granted: 1974-10-08
•
Expires: 1991-09-08
Abstract
Abstract 1. AN AMUSEMENT DEVICE COMPRISING: A. A SUBSTANTIALLY TRANSPARENT HOUSING, B. A PLURALITY OF SUBSTANTIALLY IDENTICAL TRANSPARENT COMPARTMENTS WITHIN SAID HOUSING, SAID COMPARTMENTS BEING POLYHEDRONS HAVING MORE THAN SIX SIDES BOUNDED BY PLANAR WALLS PREDETERMINED ONES OF WHICH HAVE APERTURES FORMED THEREIN, C. A SELECTED NUMBER OF APPARENTLY INVISIBLE, UNAPERTURED PLANAR WALLS DIVIDING SELECTED ONES OF SAID COMPARTMENTS, ALL OF THE EDGES OF EACH OF SAID APPARENTLY INVISIBLE WALLS BEING SUBSTANTIALLY COINCIDENT WITH THE ADJACENT EDGES OF THE BOUNDING WALLS OF THE COMPARTMENT IT DIVIDES.
Inventors
- 👤 J Felsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:28
CPC Classifications
A; A63; A63F; A63F7/00; A63F7/04; A63F7/042; A63F9/00; A63F9/06
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |