The Telephone and Its Several Inventors: A History

by Lewis Coe

On March 7, 1876, the U.S. Patent Office issued to a young inventor named Alexander Graham Bell what is arguably the most valuable patent ever: entitled "improvements in telegraphy," in truth it secured for Bell the basic principles involved in a telephone.

On the same day that Bell filed his patent application, a caveat (a preliminary patent document) was filed by Elisha Gray. This coincidence sparked the first of many debates over whether...

• Format: Paperback
• Language: English
• ISBN: 0786426098
• ISBN13: 9780786426096
• Release Date: January 2006
• Publisher: McFarland & Company
• Length: 240 Pages
• Weight: 0.74 lbs.
• Dimensions: 0.6" x 5.9" x 9.0"
• Age Range: 18 years and up
• Grade Range: Postsecondary and higher