![]() ![]() G09B1/02- Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements.G09B1/00- Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways.G09B- EDUCATIONAL OR DEMONSTRATION APPLIANCES APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE MODELS PLANETARIA GLOBES MAPS DIAGRAMS. ![]() G09- EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS.230000015572 biosynthetic process Effects 0.000 description 31.Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Brown & Bigelow filed Critical Brown & Bigelow Priority to US290873A priority Critical patent/US2683946A/en Application granted granted Critical Publication of US2683946A publication Critical patent/US2683946A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US290873A Inventor John J Olson Original Assignee Brown & Bigelow Priority date (The priority date is an assumption and is not a legal conclusion. Google Patents Weather forecasting deviceÄownload PDF Info Publication number US2683946A US2683946A US290873A US29087352A US2683946A US 2683946 A US2683946 A US 2683946A US 290873 A US290873 A US 290873A US 29087352 A US29087352 A US 29087352A US 2683946 A US2683946 A US 2683946A Authority US United States Prior art keywords indicator weather cloud base member indicia Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US2683946A - Weather forecasting device ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |