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 |
|---|---|---|---|---|---|---|
| 141 | Bipolar clamp for pulse modulation systems | US81285559 | 1959-05-13 | US3050587A | 1962-08-21 | CARBREY ROBERT L |
| 142 | Pulse transmission system | US79840459 | 1959-03-10 | US3042751A | 1962-07-03 | GRAHAM ROBERT S |
| 143 | Cw and pulse amplitude modulation analyzer | US2485960 | 1960-04-26 | US2991420A | 1961-07-04 | BEAVER MURRAY W; PERRY JR NATHANIEL C |
| 144 | Heterodyne systems employing trains of pulses | US24310551 | 1951-08-22 | US2956128A | 1960-10-11 | CUTLER CASSIUS C |
| 145 | Compandor control system | US28385752 | 1952-04-23 | US2795650A | 1957-06-11 | LEVINE ARNOLD M |
| 146 | Receiving arrangements for electric communication systems | US34892653 | 1953-04-15 | US2787787A | 1957-04-02 | WILLIAM EARP CHARLES |
| 147 | Pulse communication systems | US25780751 | 1951-11-23 | US2786100A | 1957-03-19 | WILLIAM EARP CHARLES |
| 148 | Receivers for pulse communication systems | US25780851 | 1951-11-23 | US2784257A | 1957-03-05 | WILLIAM EARP CHARLES |
| 149 | Receivers for pulsed frequency modulation carrier systems | US25780951 | 1951-11-23 | US2774817A | 1956-12-18 | WILLIAM EARP CHARLES |
| 150 | Radio-wave pulse system | US11991149 | 1949-10-06 | US2753448A | 1956-07-03 | HARVEY RINES ROBERT |
| 151 | System for the generation of electric pulses | US26685952 | 1952-01-17 | US2689910A | 1954-09-21 | HELMUT ADELAAR HANS |
| 152 | Electron tube coder device | US10390449 | 1949-07-09 | US2646548A | 1953-07-21 | ANDRE VILLE JEAN; PAUL PAGES ANDRE; ALPHONSE HERRENG PIERRE |
| 153 | Pulse code communication | US78569747 | 1947-11-13 | US2632058A | 1953-03-17 | FRANK GRAY |
| 154 | Pulse code modulation system | US7553249 | 1949-02-10 | US2570220A | 1951-10-09 | WILLIAM EARP CHARLES; FRANK WINTLE MALCOLM |
| 155 | Receiver circuit | US61896745 | 1945-09-27 | US2543015A | 1951-02-27 | GRIEG DONALD D |
| 156 | Double pulse generator | US77639447 | 1947-09-26 | US2541986A | 1951-02-20 | CLEETON CLAUD E |
| 157 | Pulse identification | US59209045 | 1945-05-05 | US2531494A | 1950-11-28 | ATWOOD JOHN B; HANSELL GRANT E |
| 158 | Pulse-modulation system | US5653148 | 1948-10-26 | US2524251A | 1950-10-03 | BRADLEY WILLIAM E |
| 159 | Radio control system | US60223545 | 1945-06-29 | US2510139A | 1950-06-06 | PURINGTON ELLISON S |
| 160 | Electrical communication system | US47607243 | 1943-02-16 | US2489268A | 1949-11-29 | KUMAR CHATTERJEA PRAFULLA; MIN AMBROSE DERMOT |
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