| 1921 | Coldroom Repairs | Company Product |
| 1922 | Coldrooms | Company Product |
| 1923 | Collagen | Company Product |
| 1924 | Collapsible Conveyors | Company Product |
| 1925 | Collapsible Gates | Company Product |
| 1926 | Collapsible Pallets | Company Product |
| 1927 | Collapsible Parking Poles | Company Product |
| 1928 | Collating Equipment | Company Product |
| 1929 | Collating Machines | Company Product |
| 1930 | Collet Chucks | Company Product |
| 1931 | Collet Lathes | Company Product |
| 1932 | Collets | Company Product |
| 1933 | Collision Warning System | Company Product |
| 1934 | Colloidial Lubricated Packings | Company Product |
| 1935 | Color Flux | Company Product |
| 1936 | Color Quartz Floor | Company Product |
| 1937 | Color Remanufactored Toner | Company Product |
| 1938 | Color TFT & Graphical UI | Company Product |
| 1939 | Colorimeters | Company Product |
| 1940 | Colour Additive | Company Product |
| 1941 | Colour Cards | Company Product |
| 1942 | Colour Cements | Company Product |
| 1943 | Colour Changing Labels | Company Product |
| 1944 | Colour Consultants | Company Product |
| 1945 | Colour Filters | Company Product |
| 1946 | Colour Grouts | Company Product |
| 1947 | Colour Hair | Company Product |
| 1948 | Colour Masterbatches | Company Product |
| 1949 | Colour Matching | Company Product |
| 1950 | Colour Measuring Instruments | Company Product |