Patent Assignment
Reel/Frame 004250/0778
Security Interest
Recorded: 1984-04-09
Pages: 7
Assignor
HYDROTILE CANADA LIMITED
Executed: 1984-01-30
Assignee
WALTER E. HELLER & COMPANY, INC., A DE CORP.
101 PARK AVE., NEW YORK, NEW YORK, 10178
Covered Properties
(4)
Apparatus and Method for Simultaneously Making a Plurality of Concrete Pipes
Patent:
4,118,165 →
Application:
05/753,526 →
Apparatus and Method for Simultaneously Making a Plurality of Concrete Pipes
Patent:
4,226,568 →
Application:
05/920,816 →
Apparatus and Method for Simultaneously Making a Plurality of Concrete Pipes
Patent:
4,248,580 →
Application:
05/920,817 →
Packerhead and Core Control System
Patent:
4,253,814 →
Application:
06/007,296 →
Related Assignments
(2)
Other recorded transfers of the patents in this record — the chain of ownership.
Security Interest
Jun 24, 1991
From: INTERNATIONAL PIPE MACHINERY CORPORATION, A CORPORATION OF IA
To: SECURITY NATIONAL BANK OF SIOUX CITY, IOWA, THE
Reel/Frame 005763/0536 →
Release and Reassignment of Patents
Sep 19, 2002
From: SECURITY NATIONAL BANK OF SIOUX CITY, IOWA, THE
To: INTERNATIONAL PIPE MACHINERY CORPORATION
Reel/Frame 013288/0788 →