Patent Assignment
Reel/Frame 045210/0498
Patent Security Agreement Supplement (Term)
Recorded: 2018-01-31
Received: 2018-01-31
Pages: 5
Assignor
HOUGHTON MIFFLIN HARCOURT PUBLISHING COMPANY
Executed: 2016-07-15
Assignee
CITIBANK, N.A.
390 GREENWICH ST, 1ST FLOOR, NEW YORK, NY, 10014, UNITED STATES
Covered Properties
(3)
Indicating an Online Test Taker Status Using a Test Taker Icon
Application:
12/470,913 →
Online Test Polling
Application:
11/877,428 →
Multiple Frequency Antennas with Reduced Space and Relative Assembly
Application:
10/309,484 →