Number | Name | Date | Kind |
---|---|---|---|
595455 | Glidden | Dec 1897 | A |
3658204 | Bottger | Apr 1972 | A |
4731022 | Garland | Mar 1988 | A |
5318787 | Brauner et al. | Jun 1994 | A |
6206218 | Young et al. | Mar 2001 | B1 |
Entry |
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Description of “Mr. Gallon” used for the past 34 years.* |
Mini Lesson by Natalie Roberts Nov. 3, 1997.* |
Elementary Mathematics-Science SMILE Meeting by Porter Johnson, May 8, 2001.* |
EAI Spring 2001 catalog p. 52. |