G03B 1/54
Tensioning or loop-maintaining devices
G03B1/54 (Tensioning or loop-maintaining devices) appears on 12 US grants and 0 published applications in this corpus.
Search patents in G03B- Granted patents
- 12
- Published applications
- 0
- Assignees
- 8
- Inventors
- 21
- Latest grant
- 15 Jul 1997
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 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 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Film tension sensing device15 Jul 1997US 5,648,834 A
- Apparatus for tensioning band or web portions running off and onto two rollers6 Aug 1985US 4,533,090 AArnold & Richter Cine Technik GmbH & Co.Betriebs KG
- Photographic printing apparatus8 May 1984US 4,447,146 A
- Film sag detecting device for sound cinecamera27 Apr 1982US 4,326,781 AChinon Industries Incorporation
- Film loop apparatus5 Aug 1980US 4,215,827 A
No published applications in this class yet.
Most cited
By later US patents
- Film loop apparatus75US 4,215,827 A1980
- Photographic printing apparatus9US 4,447,146 A1984
- Rotational position sensor7US 3,941,332 ABell & Howell Company · 1976
- Film tensioning device6US 4,144,991 AChristie Electric Corp. · 1979
- Film tension maintenance means for use in roll-film camera4US 3,938,753 AFuji Photo Film Co., Ltd. · 1976