发明授权
- 专利标题: Game piece retaining
- 专利标题(中): 游戏片保留
-
申请号: US684658申请日: 1976-05-10
-
公开(公告)号: US4021045A公开(公告)日: 1977-05-03
- 发明人: Seymour Mermelstein
- 申请人: Seymour Mermelstein
- 专利权人: Seymour Mermelstein
- 当前专利权人: Seymour Mermelstein
- 主分类号: A63F3/02
- IPC分类号: A63F3/02
摘要:
A chess or checker board has individual blocks for each square enclosed by a raisable normally recessed lattice or egg-crate structure.
公开/授权文献
- US5819551A Air conditioning apparatus for a vehicle 公开/授权日:1998-10-13
信息查询