Patent Assignment
Reel/Frame 004879/0993
Assignment of Assignors Interest.
Recorded: 1988-04-25
Pages: 3
Assignee
R. A. HANSON CO., INC., A CORP. OF WA
P.O. BOX 7400, SPOKANE, WASHINGTON, 99207-0400
Covered Property
(1)
Continuous Excavating Apparatus and Methods
Patent:
4,858,347 →
Application:
07/185,983 →
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.