| Patented Countries | Patent No. | Patent Description |
| Japan |
3154758 |
Construction of Bellows cover assembly |
| Japan |
3123591 |
Construction of Bellows cover assembly |
| Germany |
Nr.20.2004 05 447.7 |
Improvement for Bellows cover construction |
| Germany |
Nr.20311 498.1 |
Improvement for Bellows cover assembly |
| Taiwan |
165143 |
Improvement for construction of single-piece jointing type Bellows cover |
| Taiwan |
181619 |
Improvement for chips and guard construction for heavey-duty lathe |
| Taiwan |
M362729 |
Improvement for Bellows cover construction |
| Taiwan |
M360103 |
Improvement for winding type cover construction |
| Taiwan |
M241152 |
Improvement for finned Bellows cover jointed with plate |
| Taiwan |
M296755 |
Improvement for Bellows cover construction |
| Taiwan |
M255098 |
Improvement for chip guard construction |
| Taiwan |
M265155 |
Improvement for Bellows cover construction |
| Taiwan |
M271646 |
Improvement for Bellows cover construction |
| Taiwan |
M296756 |
Improvement for Bellows cover construction |