| http://www.w3.org/ns/prov#value | - While these devices, and especially good ones such as those shown in my patents (U.S. Pat. Nos. 3,845,676, issued Nov. 5, 1974, and 4,112,793, issued Sept. 12, 1978), are quite useful to large enterprises where a lot of oval cutting is to be done, there is also a need for an inexpensive device for cutting ovals in such materials as cardboard or glass or for marking ovals with a pencil or other mar
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