Patent US3613261A successfully refreshed from Google Patents.
US3613261A
Expired / Lapsed
US
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Chess playing aid
Assignee: Individual
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Filing: 1969-05-29
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Granted: 1971-10-19
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Expires: 1989-05-29
Abstract
Abstract THIS INVENTION CONSISTS OF A CHESS BOARD OF PREDETERMINED THICKNESS THAT IS MADE OF TWO PIECES OF MATERIAL OF EQUAL SIZE THAT ARE HINGED TOGETHER TO FORM A SINGLE SURFACE ON WHICH THE GAME OF CHESS IS PLAYED. THE CHESS BOARD IS PROVIDED WITH TWO DIAMETRICALLY OPPOSED CHIP HOLDERS THAT ARE INTEGRALLY FORMED WITH THE ENDS OF THE BOARD AND PROJECT OUTWARD FROM THE ENDS. A PLURALITY OF CHIPS, EACH CHIP HAVING THE BASIC CONFIGURATION OF A DISK, ARE PLACED IN THE CHIP HOLDER WHEN NOT IN ACTUAL USE. INDICIA ARE LOCATED ON EACH SIDE OF THE CHIPS FOR THE PLAYING OF THE CHESS GAME, AS NOTED LATER ON IN THIS SPECIFICATION.
Inventors
- 👤 Eligia J Petty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:40
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/22
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |