子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 401 | Perforating strip for printing presses | US3554070D | 1968-11-18 | US3554070A | 1971-01-12 | BOYD HARRY S |
| This invention relates to an improved perforating strip for printing presses. More particularly, the invention relates to a device for perforating paper as the paper passes over the impression cylinder of an offset or lithographic press, the device comprising an elongated thin metal strip having a base portion and having upstanding teeth along one edge of the base portion, the teeth being spaced apart from each other and the base portion having notches therein between the teeth so that the base portion is of reduced width at the notches, the notches providing relief of pressure of paper pressing against the teeth and base portion and permitting each of the teeth to flex individually.
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| 402 | Cover assembly for impression cylinder of printing equipment | US3430560D | 1965-07-19 | US3430560A | 1969-03-04 | NETTLEMAN JOHN B |
| 403 | Process for register embossing printed sheet metal | US44182865 | 1965-03-22 | US3362264A | 1968-01-09 | BRODERICK FRANK W |
| 404 | Paper perforating attachment for printing press | US7846660 | 1960-12-27 | US3152501A | 1964-10-13 | FREDERICK NASSAR |
| 405 | Method and apparatus for making perforating strip | US1179860 | 1960-02-29 | US3112775A | 1963-12-03 | THOMAS GARLAND |
| 406 | Optical line inscribing apparatus | US4492160 | 1960-07-25 | US3103849A | 1963-09-17 | WISE LESTER V |
| 407 | Lining device | US61319556 | 1956-10-01 | US2881523A | 1959-04-14 | LASSEN JR CARL C |
| 408 | Ruling engine | US47473154 | 1954-12-13 | US2843936A | 1958-07-22 | CARROUCHE RICHARD L |
| 409 | Apparatus for graphprinting | US41225454 | 1954-02-24 | US2776620A | 1957-01-08 | WALTER QUIMBY |
| 410 | Printer slotter roller adjustment | US20523751 | 1951-01-10 | US2674942A | 1954-04-13 | LEONARD ROCKSTROM |
| 411 | Ruling and striping device | US21006951 | 1951-02-08 | US2660951A | 1953-12-01 | BURCKEL CHRISTIAN E |
| 412 | Sheet edge trimmer for printing presses | US10848549 | 1949-08-04 | US2645995A | 1953-07-21 | ISELLA JOHN J |
| 413 | Inking perforator | US72153747 | 1947-01-11 | US2556687A | 1951-06-12 | FAULKNER CHARLES E |
| 414 | Consecutive ruling machine | US54683744 | 1944-07-27 | US2451931A | 1948-10-19 | HARRY EDELMANN |
| 415 | Pen control mechanism for paper ruling machine | US52476644 | 1944-03-02 | US2448285A | 1948-08-31 | THOMPSON ROBERT J |
| 416 | Bronzing apparatus | US45959742 | 1942-09-24 | US2373991A | 1945-04-17 | ARTHUR BELL |
| 417 | Automatic perforating and scoring rule | US36024740 | 1940-10-08 | US2270475A | 1942-01-20 | ORVILLE REINSCH HARRY |
| 418 | Perforating, scoring, and punching attachment for printing presses | US29207739 | 1939-08-26 | US2235948A | 1941-03-25 | SCHWISOW ARNOLD J |
| 419 | Printing and punching registering apparatus | US16588137 | 1937-09-27 | US2151028A | 1939-03-21 | HAYWARD RALPH A |
| 420 | Combined ink marking and perforating machine | US12831437 | 1937-03-01 | US2143504A | 1939-01-10 | ALTVATER ARTHUR W |
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