| Patents for Letson & Burpee, Ltd. |
Patents 16 -
30
of 50
      |
| Number | Date | Patentee | Title | Type |
| 1,289,111 | Dec. 31, 1918 | F.W. Burpee | Flanging device for can-bodies | can making machines |
| 1,289,645 | Dec. 31, 1918 | F.W. Burpee | Can-opener | can and jar openers |
| CA-188,532 | Feb. 04, 1919 | C.B. Burpee, F.W. Burpee, J.H. Burpee | Can seaming machine | can making machines |
| 1,293,694 | Feb. 11, 1919 | C.B. Burpee, F.W. Burpee, J.H. Burpee | Can-seaming machine | can making machines |
| CA-208,000 | Jan. 25, 1921 | W. Bandy, D.A. McIntosh | Oscillating clutch | shingle machines |
| CA-218,954 | May 23, 1922 | W. Bandy | Intermittent feed clutch | shingle machines |
| CA-237,454 | Jan. 29, 1924 | F.W. Burpee | Can seaming machine | can making machines |
| CA-255,782 | Nov. 24, 1925 | D.A. McIntosh | Shingle machine set work | shingle machines |
| CA-259,204 | Mar. 23, 1926 | W.H. Porter | Feed clutch | shingle machines |
| CA-273,212 | Aug. 16, 1927 | W.H. Porter | Feed clutch | shingle machines |
| CA-286,312 | Jan. 08, 1929 | D.A. McIntosh, G.M. Letson | Derrick conveyer | hoists, winches, come-alongs |
| CA-384,801 | Oct. 24, 1939 | G.M. Letson, D.W. Brookes | Can weighing machine | canning apparatus |
| CA-612,214 | Jan. 10, 1961 | H.M. Schmelcher | Split mitre gear | woodworking machine mechanisms |
| CA-690,774 | Jul. 14, 1964 | R.D. Batt | Log haul conveyer chain | woodworking machine stockfeeding mechanisms |
| CA-691,591 | Jul. 28, 1964 | R.A. Baldrey | Load moving structure | |
