Average Co-Inventor Count = 1.41
ph-index = 3
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 832,912 patents)
4 patents:
1. 5174237 - Grade marker
2. 4957170 - Curb and gutter shovel
3. 4813494 - Stake driver
4. 4187901 - Flat plate solar heat collector