H01H 2211/034
Fixed contacts on different planes
H01H2211/034 (Fixed contacts on different planes) appears on 9 US grants and 0 published applications in this corpus.
Search patents in H01H- Granted patents
- 9
- Published applications
- 0
- Assignees
- 7
- Inventors
- 9
- Latest grant
- 1 Aug 1995
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Two-layer membrane switch1 Aug 1995US 5,438,177 AKey Tronic Corporation
- Self-referencing capacitive key cell structure and switchcore matrices formed therefrom24 Oct 1989US 4,876,461 AW. H. Brady Co.
- Membrane switchcores with key cell contact elements connected together for continuous path testing15 Aug 1989US 4,857,683 AW. H. Brady Co.
- A method for making low profile microswitches, particularly useful for keyboards6 Sep 1988US 4,768,284 ATexas Instruments Incorporated
- Electronic equipment having a key input function21 Jul 1987US 4,681,987 ACanon Kabushiki Kaisha
No published applications in this class yet.
Most cited
By later US patents
- Membrane keyboard apparatus55US 3,995,126 AMagic Dot, Inc. · 1976
- Self-referencing capacitive key cell structure and switchcore matrices formed therefrom18US 4,876,461 AW. H. Brady Co. · 1989
- Two-layer membrane switch15US 5,438,177 AKey Tronic Corporation · 1995
- Membrane switchcores with key cell contact elements connected together for continuous path testing14US 4,857,683 AW. H. Brady Co. · 1989
- Electronic equipment having a key input function11US 4,681,987 ACanon Kabushiki Kaisha · 1987