Patent Assignment
Reel/Frame 004529/0752
Assignment of Assignors Interest.
Recorded: 1986-03-05
Pages: 1
Assignee
KEYSTONE INTERNATIONAL, INC., A CORP OF TEXAS
P. O. BOX 40010, HOUSTON, TEXAS, 77240
Covered Property
(1)
Fire-Safe Ventilation Valve
Patent:
4,651,763 →
Application:
06/836,540 →
Related Assignments
(1)
Other recorded transfers of the patent in this record — the chain of ownership.