IP Library › Assignment 004354/0329
Patent Assignment
Reel/Frame 004354/0329

Assignment of Assignors Interest.

Recorded: 1984-12-31 Pages: 3
Assignor
WILLSON, DAVID H.
Executed: 1984-12-18
Assignee
AMSTED INDUSTRIES INCORPORATED
3700 PRUDENTIAL PLAZA, A CORP OF DE, CHICAGO, ILLINOIS
Covered Property (1)
Relieving Pressure Differential in Vacuum Filter
Patent: 4,571,302 →
Application: 06/687,975 →
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Released by Secured Party Apr 12, 1989
From: FIRST NATIONAL BANK OF CHICAGO, AS AGENT
To: AMSTED INDUSTRIES INCORPORATED, A CORP. OF DE.
Reel/Frame 005070/0731 →
Assignment of Assignors Interest. Jun 29, 1989
From: AMSTED INDUSRIES INCORPORATED
To: FILTRA-SYSTEMS COMPANY
Reel/Frame 005184/0062 →