Patent Drawing for F. Shaw's Head Telephone - NARA - 6277692.jpg
en
Patent Drawing for F. Shaw's Head Telephone NARA 6277692, Patent drawings in the National Archives and Records Administration, US National Archives series: Utility Patent Drawings, Images from the National Archives and Records Administration, US National Archives location: other, Patent Drawing for F. Shaw's Head Telephone
commons
ja
F・ショーのヘッドテレフォンのための特許図面 NARA 6277692、米国国立公文書館管理局の特許図面、米国国立公文書館シリーズ:米国国立公文書館管理局の画像:F・ショーのヘッドテレフォンのための特許図面
commons_translated
telephone unit patent law patent patent right patency patented