G09B29/00- Maps Plans Charts Diagrams, e.g.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.Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number Publication date Application granted granted Critical Publication of US497917A publication Critical patent/US497917A/en Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links

US497917A - Alexander gleason - Google Patents US497917A - Alexander gleason - Google Patents Alexander gleason Download PDF Info Publication number US497917A US497917A US497917DA US497917A US 497917 A US497917 A US 497917A US 497917D A US497917D A US 497917DA US 497917 A US497917 A US 497917A Authority US United States Prior art keywords map time gleason arms arm Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

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