A63B 51/143
Hand-held string-tensioning devices
Official title: {Hand-held string-tensioning devices}
A63B51/143 (Hand-held string-tensioning devices) appears on 13 US grants and 5 published applications in this corpus.
Search patents in A63B- Granted patents
- 13
- Published applications
- 5
- Assignees
- 3
- Inventors
- 17
- Latest grant
- 25 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Down-pressed clamp base25 Feb 2020US 10,569,141 B2Xpider Co., Ltd.
- Racket cross-string weaving assistant26 Feb 2019US 10,213,658 B1
- Tennis racket stringing machine30 Mar 2004US 6,712,723 B2
- Device for repairing or replacing a broken string on a racket8 Dec 1998US 5,846,146 A
- Process for stringing rackets for ball games and a device for carrying out the process16 Feb 1993US 5,186,459 A
- Down-pressed clamp base5 Dec 2019US 2019/0366161 A1Xpider Co., Ltd.
- Self Locking Racket Stringing Machine Tensioner18 Jan 2018US 2018/0015335 A1
- Portable Tennis Racket Stringing Machine9 Nov 2017US 2017/0319913 A1
- Sports racket and method of manufacturing same8 Aug 2013US 2013/0203529 A1Revolutionary Tennis Innovations, LLC
- Tennis racket stringing machine30 Jan 2003US 2003/0022740 A1
Most cited
By later US patents
- Tennis racquet19US 4,140,316 A1979
- Tennis racket15US 3,994,495 A1976
- Process for stringing rackets for ball games and a device for carrying out the process15US 5,186,459 A1993
- Racket for ball games, in particular tennis, as well as stringing device therefor14US 4,949,968 A1990
- Stringing tool for tennis rackets and the like8US 4,484,742 A1984