Contact Patents (Class 200/238)
- With subsequent rolling (Class 200/240)
- With subsequent sliding (Class 200/241)
- Bridging contacts (Class 200/243)
- With rigid pivoted member carrying the moving contact (Class 200/244)
- With resilient mounting (Class 200/245)
- Self-aligning contacts (Class 200/248)
- Having contact adjusting means (Class 200/249)
- Having biasing means (Class 200/250)
- Cooperating contacts of different material (Class 200/263)
- Infiltrated porous substance (Class 200/264)
- Compositions (Class 200/265)
- Alloys (Class 200/266)
- One layer (i.e., additional to its mounting) (Class 200/267)
- Two layers (Class 200/268)
- Three layers or more (Class 200/269)
- Elements (Class 200/270)