Average Co-Inventor Count = 2.35
ph-index = 4
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. The Scott-fetzer Company (4 from 257 patents)
4 patents:
1. D299175 - Upright vacuum cleaner
2. 4589161 - Vacuum driven tool
3. 4573237 - Hand vacuum with tilting intake
4. 4554702 - Vacuum driven tool