DP

David F. Penrose

UN Unknown: 2 patents #39 of 2,107Top 2%
📍 Christchurch, NZ: #2 of 17 inventorsTop 15%
Overall (1997): #42,784 of 185,788Top 25%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5685762 De-boxing apparatus for honey frames Roland A. Hitchcox, deceased, Neil M. Hitchcox 1997-11-11
5662511 Honey frame feeding apparatus Roland A. Hitchcox, deceased, Neil M. Hitchcox 1997-09-02