Average Co-Inventor Count = 2.40
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. Jacobsen Manufacturing Company (4 from 13 patents)
4 patents:
1. 4152884 - Lawn mower with catcher accommodation
2. 4149362 - Combined lawn mower and grass catcher
3. 4149363 - Lawn mower catcher
4. 3980068 - Gasoline powered machine having two electric circuit switches