Average Co-Inventor Count = 2.18
ph-index = 2
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 Machine Group (3 from 4 patents)
2. National Machine Company (1 from 9 patents)
4 patents:
1. 11892198 - Hot water tank and flow through heating assembly
2. 11747047 - Hot water tank with thermal mixing valve
3. 11293668 - Hot water tank with thermal mixing valve
4. 10921025 - Hot water tank