序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
61 Ribbon vibrating and ribbon shifting mechanism US57052731 1931-10-23 US1929448A 1933-10-10 JOHN RITZ
62 Typewriter US33020129 1929-01-04 US1864594A 1932-06-28 HOKANSON OTTO A; KOCA JAMES F
63 Typewriting machine US37545729 1929-07-02 US1834522A 1931-12-01 HELMOND WILLIAM F
64 Typewriting machine US27149928 1928-04-20 US1808096A 1931-06-02 ALLEN AVERY HENRY
65 Typewriting machine US1807590D US1807590A 1931-06-02
66 Adding and recording machine US52626821 1921-12-31 US1749694A 1930-03-04 BROMAN CHARLES E
67 Typewriting machine US14825426 1926-11-13 US1700826A 1929-02-05 ALLEN AVERY HENRY; OTTO PETERMANN; HARMON EDWIN L
68 Computing and recording machine US4084125 1925-07-01 US1587304A 1926-06-01 HART FREDERICK A
69 Typewriter US1566530D US1566530A 1925-12-22
70 Ribbon-shifting mechanism for adding or like machines US48383321 1921-07-11 US1542130A 1925-06-16 HAYES BENJAMIN P
71 Typewriting machine US35923520 1920-02-17 US1532685A 1925-04-07 CORCORAN CORNELIUS B
72 Combined typewriting and computing machine US1512310D US1512310A 1924-10-21
73 Ribbon shift and vibrating mechanism US57733122 1922-07-25 US1455111A 1923-05-15 CRAWLEY MANSFIELD C
74 Ribbon vibrator for typewriters US29150919 1919-04-21 US1432183A 1922-10-17 HOKANSON OTTO A
75 Typewriting-machine US1351812D US1351812A 1920-09-07
76 Combined type-writing and computing machine. US1433715 1915-03-15 US1294727A 1919-02-18 THOMAS EDWARD
77 Type-writing machine. US5322015 1915-09-30 US1249022A 1917-12-04 BURRIDGE LEE S; BURRIDGE FRANCIS O
78 Type-writing machine. US24615 1915-01-02 US1247950A 1917-11-27 FOX WILLIAM R
79 Type-writing machine. US235115 1915-01-15 US1230094A 1917-06-19 BARNEY EDWIN E
80 Type-writing machine. US2098715 1915-04-13 US1211203A 1917-01-02 MCLAUGHLIN JOHN C
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