GB730466A
(https= )
US1432616A
(en )
1922-10-17
Keyboard-clearing means for calculating machines
GB1515587A
(en )
1978-06-28
Hydraulic amplifier
GB709188A
(https= )
GB617358A
(en )
1949-02-04
Improvements in or relating to machines used in perforating cards for use in statistical machines
GB1243640A
(en )
1971-08-25
Selectively operable mechanism for keyboard operating machines
GB1248249A
(en )
1971-09-29
Keyboard encoder
GB453280A
(https= )
GB1126902A
(en )
1968-09-11
Improvements relating to hydraulic control systems
USRE16207E
(en )
1925-11-10
Assigstob so moffisob calculgt
GB1154111A
(en )
1969-06-04
Encoder.
GB931679A
(en )
1963-07-17
A ten-key calculating machine
GB660642A
(https= )
GB380106A
(en )
1932-08-26
Improvements in and relating to typewriter-calculating machines controlling card-perforating machines
GB409138A
(en )
1934-04-26
Improvements in or relating to keyboard arrangements for typewriters
MX2025013131A
(es )
2026-02-03
Conjuntos indicadores de cerraduras
GB454463A
(https= )
GB899265A
(en )
1962-06-20
Case shift mechanism for keyboard perforator and counter
GB231515A
(https= )
GB442856A
(https= )
GB1186635A
(en )
1970-04-02
Electric Typewriter Keyboard Operated Mechanism
GB484821A
(https= )
GB694698A
(en )
1953-07-22
Improvements in or relating to a ten-key mechanism for an adding machine
Do
2011
An Extension of Product Data Model for Calculating Product-level Carbon Footprint
GB799137A
(en )
1958-08-06
Improvements in contact keyboards for controlling typewriters and calculating, accounting and like machines