G04F 13/023
Using cathode-ray oscilloscopes
Official title: {using cathode-ray oscilloscopes (circuits for inserting reference time markers for cathode-ray oscilloscopes G01R13/305)}
G04F13/023 (Using cathode-ray oscilloscopes) appears on 5 US grants and 0 published applications in this corpus.
Search patents in G04F- Granted patents
- 5
- Published applications
- 0
- Assignees
- 3
- Inventors
- 8
- Latest grant
- 25 Aug 1992
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 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Photonic cathode ray tube25 Aug 1992US 5,142,193 AKaman Sciences Corporation
- Automatic period and frequency measurements10 Apr 1990US 4,916,677 ATektronix, Inc.
- Pulse measurement circuit3 Nov 1987US 4,704,036 ATektronix, Inc.
- Time interval measurement method and apparatus21 Dec 1976US 3,999,128 ATektronix, Inc.
- Sweep generator apparatus and method17 Aug 1976US 3,975,684 AHewlett-Packard Company
No published applications in this class yet.
Most cited
By later US patents
- Pulse measurement circuit8US 4,704,036 ATektronix, Inc. · 1987
- Sweep generator apparatus and method7US 3,975,684 AHewlett-Packard Company · 1976
- Automatic period and frequency measurements4US 4,916,677 ATektronix, Inc. · 1990
- Time interval measurement method and apparatus3US 3,999,128 ATektronix, Inc. · 1976
- Photonic cathode ray tube2US 5,142,193 AKaman Sciences Corporation · 1992