Patent Assignment
Reel/Frame 005524/0932
Assignment of Assignors Interest.
Recorded: 1990-11-30
Pages: 4
Assignors
AHMED, OSMAN
Executed: 1990-11-20
BRADLEY, STEVEN A.
Executed: 1990-11-02
FRITSCHE, STEVEN L.
Executed: 1990-11-15
JACOB, STEVEN D.
Executed: 1990-11-21
Assignee
LANDIS & GYR POWERS, INC., A CORP. OF DE
1000 DEERFIELD PARKWAY,, BUFFALO GROVE,, ILLINOIS, 60015
Covered Property
(1)
Apparatus for Controlling the Ventilation of Laboratory Fume Hoods
Patent:
5,092,227 →
Application:
07/590,195 →
Related Assignments
(3)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger
Dec 14, 1998
From: LANDIS & STAEFA, INC.
To: LANDIS & GYR HOLDINGS, INC.
Reel/Frame 009638/0164 →
Merger & Name Change
Dec 14, 1998
From: LANDIS & GYR HOLDINGS; CERBERUS HOLDINGS, INC.
To: SIEMENS BUILDING TECHNOLOGIES, INC.
Reel/Frame 009638/0167 →
Merger
Mar 11, 2010
From: SIEMENS BUILDING TECHNOLOGIES, INC.
To: SIEMENS INDUSTRY, INC.
Reel/Frame 024066/0464 →