G09C 3/04
Wherein the operative connections between the keys and the type-bars are automatically
Official title: wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member
G09C3/04 (Wherein the operative connections between the keys and the type-bars are automatically) appears on 11 US grants and 2 published applications in this corpus.
Search patents in G09C- Granted patents
- 11
- Published applications
- 2
- Assignees
- 6
- Inventors
- 16
- Latest grant
- 19 Jan 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- File access control on magnetic tape by encrypting metadata19 Jan 2021US 10,895,994 B2International Business Machines Corporation
- Method and apparatus for encrypted print processing14 Dec 2010US 7,853,017 B2Canon Kabushiki Kaisha
- Control circuits for electric coding machines16 Jan 2001US 6,175,625 B1The United States of America as represented by the National Security Agency
- Teletypewriter privacy system1 Jun 1982US 4,332,977 AAmerican Standard Inc.
- Teletype mixer apparatus for coding and decoding11 Mar 1980US 4,192,967 AThe United States of America as represented by the Secretary of the Air Force
Most cited
By later US patents
- Control circuits for electric coding machines20US 6,175,625 B1The United States of America as represented by the National Security Agency · 2001
- Teletypewriter privacy system2US 4,332,977 AAmerican Standard Inc. · 1982
- Method and apparatus for encrypted print processing2US 7,853,017 B2Canon Kabushiki Kaisha · 2010
- File access control on magnetic tape by encrypting metadata1US 10,895,994 B2International Business Machines Corporation · 2021
- Electro-mechanical cipher machine1US 4,143,978 AThe United States of America as represented by the Secretary of the Navy · 1979