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| Number | Title | Issue Date |
| 4480507 | Method for manufacturing a punching unit A cutting die assembly for cigar wrappers is manufactured by rigidly interconnecting a knife blade unit and a die assembly on a common carrier. The die assembly has an opening of particular shape bounded by a generally planar margin over which tobacco lea... | 11/06/1984 |
| 4471677 | Device for producing cylindrical cavities in a layer of gelled material Semi-automatic device which makes it possible to produce cylindrical cavities, according to a given geometrical arrangement, in a layer of gelled material, the said device consisting of a set of several individual devices each of which, as shown in FIG. 1... | 09/18/1984 |
| 4339976 | Punch retainer A punch and retainer assembly wherein the punch has a non-circular punching end, a flattened surface at the upper end of the side wall thereof and a radially inwardly extending recess directly below the flattened side wall portion. The punch retainer incl... | 07/20/1982 |
| 4250786 | Punching tool A punching tool comprises a plurality of knives, which constitute an annular array and are provided with wedge-shaped cutting edges. Each knife is vertically adjustably secured to a vertical knife holder. Adjacent knife holders are detachably interconnect... | 02/17/1981 |
| 4009625 | Self-stripping punch with ears A side outlet, self-stripping punch adapted to be mounted in a bore in a die board. The self-stripping punch includes an elongated, cylindrical base having a cutting edge on the top end and a pair of locking ears on the bottom end to prevent rotation of t... | 03/01/1977 |
| 4007653 | Punching device with punch retainer A punching device includes a fixed frame adapted to support punch means in alignment with a ram. An assembly of the punch, a guide and stripping sleeve and a stripping spring is removable as a unit and such assembly includes means by which such assembly i... | 02/15/1977 |
| 3990333 | Method of forming a filter by die-cutting A method and apparatus for cutting resilient foamed synthetic plastics filter material by pressing a die against a block of such material to provide cuts which are interleaved extending from opposite faces of the block the cuts at each such face being joi... | 11/09/1976 |
