IBM Wheelwriter/Sources: Difference between revisions

Revision as of 14:45, 5 October 2016

Most of these have expired by now, 20 years after invention.

[patent:US5000592|US5000592 - Envelope addressing format feature for electronic typewriters]

[patent:US4799811|US4799811 - Automatic relocate on continuation of document playout]
[patent:US4894798|US4894798 - Automatic stop code insertion feature for a word processing apparatus]
[patent:US4957380|US4957380 - Tab adjust function for an electronic typewriter to permit the shifting of tabs from a first to a second format]

@@ Line 1: / Line 1: @@
+== Patents ==
+Most of these have expired by now, 20 years after invention.
+=== IBM Hardware ===
+* [patent:US5000592|US5000592 - Envelope addressing format feature for electronic typewriters]
+=== IBM Software ===
+* [patent:US4799811|US4799811 - Automatic relocate on continuation of document playout]
+* [patent:US4894798|US4894798 - Automatic stop code insertion feature for a word processing apparatus]
+* [patent:US4957380|US4957380 - Tab adjust function for an electronic typewriter to permit the shifting of tabs from a first to a second format]
+=== Other Manufacturers ===
+* [[patent:US4842428|US4842428 - Electronic typewriter with spell checking and correction: Brother]]
+* [patent:US3924722|US3924722 - Typewriter with electronic keyboard: Cpt Corp]
 == Manuals ==
 * [http://support.lexmark.com/index?page=content&id=SO4998&userlocale=EN_US&segment=SUPPORT Lexmark - Official Product Manuals for IBM/Lexmark Wheelwriter Typewriters]