Generators Patents (Class 48/61)
- Coal, oil and water (Class 48/71)
- Coal and oil (Class 48/72)
- Coal and water (Class 48/73)
- Producers (Class 48/76)
- Coal (Class 48/77)
- Water (Class 48/78)
- Carbon monoxide (Class 48/85)
- Oil and steam injected (Class 48/75)
- Air and steam injected (Class 48/63)
- Electric (Class 48/65)
- Rotary bottom (Class 48/66)
- Water jacket (Class 48/67)
- Water-seal pit (Class 48/69)
- Refractory filling (Class 48/74)
- Fuel agitating
- Chargers (Class 48/86R)
- Accessories (Class 48/87)
- Partial combustion carburetor (Class 48/62A)
- Coal, oil and water (Class 48/98)
- Coal and water (Class 48/99)
- Coal and oil (Class 48/100)
- Coal (Class 48/101)
- Oil (Class 48/102R)
- Water (Class 48/108)
- Wood (Class 48/111)
- Metal bath (Class 48/92)
- Oil and gas injected (Class 48/93)
- Oil and steam injected (Class 48/94)
- Domestic plants (Class 48/90)
- Furnaces (Class 48/113)