Magnetic Compass Patent Print
This Patent for a Magnetic Compass was invented by Warburg James P and filed on April 24, 1919. It was issued on November 20, 1923 by the United States Patent and Trademark Office.
Please Choose your Options for your Patent Print:
Discounts: Buy more - save more
Buy 3 or more items, get 5% off
Buy 5 or more items, get 8% off
Buy 7 or more items, get 10% off
Buy 10 or more items, get 15% off