Average Co-Inventor Count = 1.33
ph-index = 2
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Other (4 from 832,891 patents)
4 patents:
1. 5819785 - Instantaneous hot water control device
2. 5505429 - Gate valve
3. 4873739 - Chimney cleaning device
4. 4727617 - Chimney cleaning apparatus