HS

Henry A. Spencer

📍 Edmonton, CA: #922 of 2,912 inventorsTop 35%
Overall (All Time): #2,287,672 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5426887 Shelter cone for protecting seeds and seedlings Stephen W. J. Dominy, Mark Ryans 1995-06-27
4998378 Book-type container for raising seedlings 1991-03-12