Fluid Pressure Patents (Class 200/81R)
- Washing machine (Class 200/83WM)
- Differential pressure (Class 200/83A)
- Special diaphragm (Class 200/83B)
- Aneroid bellows (Class 200/83C)
- Differential and plural bellows (Class 200/83D)
- Liquid contact (Class 200/83F)
- Piston and diaphragm (Class 200/83J)
- Magnetically operated (Class 200/83L)
- Contacts on diaphragm (Class 200/83N)
- Snap action (Class 200/83P)
- Combined switch and valve actuator (Class 200/83Q)
- Adjustment means (Class 200/83S)
- Time delay (Class 200/83T)
- Miniature (Class 200/83V)
- Multiple diaphragms or multi-ply diaphragms (Class 200/83Y)
- Overpressure protection means (Class 200/83W)
- Manual actuating means (Class 200/83Z)