Patent Assignment
Reel/Frame 004281/0227
Assignment of Assignors Interest.
Recorded: 1984-07-20
Pages: 3
Assignor
WERJEFELT, BERTIL
Executed: 1984-07-13
Assignee
E.I. DU PONT DE NEMOURS AND COMPANY
A CORP OF DE, WILMINGTON, DELAWARE
Covered Properties
(2)
Life Support System and Method of Providing Fresh Air to Enclosed Areas
Patent:
4,440,164 →
Application:
06/228,940 →
Toxic Fume Protective Hood and Method of Construction
Patent:
4,683,880 →
Application:
06/494,845 →
Related Assignments
(6)
Other recorded transfers of the patents in this record — the chain of ownership.
Purchase Agreement
Dec 11, 1996
From: WERJEFELT, BERTIL R.L.
To: ESSEX P.B. & R. CORP.
Reel/Frame 008261/0880 →
Security Interest
Dec 11, 1996
From: ESSEX P. B. & R. CORP.
To: WERJEFELT, BERTIL R.L.
Reel/Frame 008261/0900 →
Assignment of Assignor's Interest
Dec 20, 1996
From: E.I. DUPONT DE NEMOURS AND COMPANY
To: WERJEFELT, BERTIL R.L.
Reel/Frame 008283/0436 →
Assignment of Assignor's Interest
Sep 2, 1997
From: WERJEFELT, BERTIL R.L.
To: ESSEX P.B. & R. CORP.
Reel/Frame 008677/0584 →
Purchase Agreement
Nov 19, 1998
From: WERJEFELT, BERTIL R.L.
To: ESSEX P.B.& R. CORP.
Reel/Frame 009596/0148 →
Security Agreement
Nov 19, 1998
From: WEGERFELT, BERTIL R.L.
To: ESSEX P.B. & R. CORP.
Reel/Frame 009596/0173 →