24-02-2021, 13:50 PM
OK, liigume siis ajas veidi tagasi. Täna saabki rahus arvuti taga istuda. Pakume järgmist...
T. F. FARMER.
BITS FOR METAL-DRILLS. v No. 171,786. Patented Jan.4,1876.
fla es;-
UNITED STATES PATENT OFFICE.
THEODORE P. FARMER, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN BITS FOR METAL-DRILLS.
' Specification forming part of Letters Patent No. 171,786, dated January 4, 1876; application filed December 9, 1875.
https://patents.google.com/patent/US171786
T. F. FARMER.
BITS FOR METAL-DRILLS. v No. 171,786. Patented Jan.4,1876.
fla es;-
UNITED STATES PATENT OFFICE.
THEODORE P. FARMER, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN BITS FOR METAL-DRILLS.
' Specification forming part of Letters Patent No. 171,786, dated January 4, 1876; application filed December 9, 1875.
https://patents.google.com/patent/US171786