Woodworking – Combined machine – Boring and sawing
Patent
1976-01-13
1977-03-22
Simpson, Othell M.
Woodworking
Combined machine
Boring and sawing
83527, 83848, 145 31R, B27B 3302
Patent
active
040131076
ABSTRACT:
A fret-saw blade in combination with a fret-saw for sawing out slits starting from small-diameter holes, the blade having two rectangular segments of varying width with each of these segments having teeth of the same depth and parallel toothed and untoothed sides, and a method for using said combination.
REFERENCES:
patent: 336739 (1886-02-01), Parker
patent: 1515619 (1924-11-01), Runnels
patent: 1855311 (1932-04-01), Basner
patent: 2116123 (1938-05-01), Ocenasek
patent: 2307411 (1943-01-01), Leatherman
patent: 3152625 (1964-10-01), Bohrer
patent: 3680610 (1972-08-01), Lindgren
Steiger Ferdinand
Wahlen Werner
Bray W. D.
Mapatex Establishment
Simpson Othell M.
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