| 发明名称 |
Level indicating device for wall-mounted pictures |
| 摘要 |
A mounting plate is attached to a picture frame and holds a removable liquid bubble level. The plate can be sheared by pushing the frame toward the wall. A card is provided for packaging several mounting plates with a single bubble level.
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| 申请公布号 |
US4208802(A) |
申请公布日期 |
1980.06.24 |
| 申请号 |
US19790007377 |
申请日期 |
1979.01.29 |
| 申请人 |
BERNDT, STEPHEN R |
发明人 |
BERNDT, STEPHEN R |
| 分类号 |
A47G1/16;G01C9/28;(IPC1-7):G01C9/28 |
主分类号 |
A47G1/16 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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