| 发明名称 |
MULTIFUNCTIONAL SCAFFOLDING AND PUSHCART CONVERTIBLE UTILITY DEVICE |
| 摘要 |
A multi-functional utility apparatus that is convertible between a scaffold configuration and a pushcart configuration. A pivotal coupling assembly between first and second subframes allows the subframes to be expanded for use as a scaffolding or collapsed for use as a pushcart.
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| 申请公布号 |
US2012222913(A1) |
申请公布日期 |
2012.09.06 |
| 申请号 |
US201113308949 |
申请日期 |
2011.12.01 |
| 申请人 |
|
发明人 |
CALVERT DAVID C.;WEBB CHRISTOPHER R.;LIU TSAILU;HOLLEY PAUL W.;THOMPSON MICHAEL K.;LONTZ W. TRAVIS;BITTLE GRANT L. |
| 分类号 |
E04G1/20 |
主分类号 |
E04G1/20 |
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代理人 |
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