|
1890 INTERNATIONAL CORRESPONDENCE SCHOOLS
|
|
United States Patent and Trademark Office
|
16, 41
|
1982-10-12
|
1989-04-18
|
historic |
details
|
|
CENTER FOR OFF-CAMPUS DEGREE STUDIES CS
|
|
United States Patent and Trademark Office
|
41
|
1978-02-07
|
1984-07-03
|
historic |
details
|
|
PORTO-CLINIC/GLARE
|
|
United States Patent and Trademark Office
|
9
|
1977-12-27
|
1984-05-22
|
historic |
details
|
|
THINK METRIC
|
|
United States Patent and Trademark Office
|
16, 41
|
1977-05-03
|
1983-09-27
|
historic |
details
|
|
TRAINING DIGEST
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|
United States Patent and Trademark Office
|
16
|
1976-11-09
|
1983-04-05
|
historic |
details
|
|
AN EXECUTIVE BOOK
|
|
United States Patent and Trademark Office
|
16
|
1971-07-20
|
|
historic |
details
|
