Average Co-Inventor Count = 1.60
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. National Manufacturing Co. (3 from 40 patents)
2. National Manufacturing (1 from 1 patent)
4 patents:
1. 4829794 - Padlock
2. 4784416 - Door latch
3. 4732418 - Knob latch
4. 4643469 - Gate latch