434 / | HD | EDUCATION AND DEMONSTRATION |
365 | DF | MEANS FOR DEMONSTRATING APPARATUS, PRODUCT, OR SURFACE CONFIGURATION, OR FOR DISPLAYING EDUCATION MATERIAL OR STUDENT'S WORK {37} |
373 | DF | .~ Land or water vehicle (e.g., automobile, boat, etc.) or component thereof {3} |
375 | .~.~ Shock absorber or spring |