| 发明名称 |
Garage door opener heater |
| 摘要 |
A garage door opener heater for use on garage doors to heat the drive track of the opener during cold weather to prevent binding and restricted movement of the track when the lubricates within the track solidify at cold temperatures.
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| 申请公布号 |
US4792659(A) |
申请公布日期 |
1988.12.20 |
| 申请号 |
US19870052916 |
申请日期 |
1987.05.22 |
| 申请人 |
THOMAS, PAUL H. |
发明人 |
THOMAS, PAUL H. |
| 分类号 |
E05F15/16;E05F15/20;(IPC1-7):H05B3/56 |
主分类号 |
E05F15/16 |
| 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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