Average Co-Inventor Count = 1.33
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. Lambert Corporation (6 from 13 patents)
6 patents:
1. 4261593 - Planting and fertilizing apparatus
2. 4239086 - Lifting mechanism with cam
3. 4165697 - Hand operated seed planter
4. 4133389 - Hand-held power driven cultivator
5. 4131221 - Planting and fertilizing apparatus
6. D248654 - Cultivator