| Patents for Herbert Hunt & Sons, Ltd. |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| GB-112,879 | Jan. 31, 1918 | P. Hunt, H.W. Hunt, H. Hunt | New or improved construction of twist drill grooving and clearance grinding (or milling) machines | drill grinders |
| GB-113,389 | Feb. 21, 1918 | P. Hunt, H.W. Hunt, H. Hunt | Improvement in lathes for tapering twist drill shanks and for like purposes | metal lathes |
| GB-122,735 | Feb. 06, 1919 | P. Hunt, H.W. Hunt, H. Hunt | Improvements in twist drill point grinding machines | drill grinders |
| FR-489,933 | Mar. 22, 1919 | H. Hunt, H.W. Hunt, P. Hunt | Machine for sharpening helicoidal drill tips | drill grinders |
| FR-495,289 | Oct. 03, 1919 | P. Hunt, H. Hunt, H.W. Hunt | Machine to groove and cut twist drills | drill grinders |
| CA-209,162 | Mar. 08, 1921 | P. Hunt, H.W. Hunt, H. Hunt | Twist drill point grinding machine | drill grinders |
| GB-164,057 | May 17, 1921 | P. Hunt, H.W. Hunt, H. Hunt | Improvements in automatic flute milling machines for reamers, taps, shafts and the like | making drills and augers |
| GB-168,634 | Sep. 08, 1921 | P. Hunt, H.W. Hunt, H. Hunt | Improvements in twist drill point grinding machines | drill grinders |
| FE-23,110 | Oct. 04, 1921 | H. Hunt, H.W. Hunt, P. Hunt | Machine to groove and cut twist drills | drill grinders |
| DE-375,851 | May 19, 1923 | H. Hunt, H.W. Hunt, P. Hunt | Drill grinding machine | drill grinders |
| GB-275,071 | Aug. 04, 1927 | P. Hunt, H.W. Hunt | Improvements in twist drill point grinding and thinning machines | drill grinders |
| GB-360,990 | Nov. 19, 1931 | P. Hunt, H.W. Hunt | A machine for sharpening screwing taps and the like | tool making |
