-
Bird counter
-
Patent number 5,983,837
-
Issue date Nov 16, 1999
-
American Calan, Inc.
-
Douglas V. Briggs
-
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
-
-
Poultry harvester
-
Patent number 5,325,820
-
Issue date Jul 5, 1994
-
American Calan, Inc.
-
Douglas V. Briggs
-
G06 - COMPUTING CALCULATING COUNTING
-
Feed tub
-
Patent number 4,450,791
-
Issue date May 29, 1984
-
Douglas V. Briggs
-
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING