G09B 1/20
And bearing the symbols on a surface parallel to the axis of
Official title: and bearing the symbols on a surface parallel to the axis of rotation
G09B1/20 (And bearing the symbols on a surface parallel to the axis of) appears on 17 US grants and 9 published applications in this corpus.
Search patents in G09B- Granted patents
- 17
- Published applications
- 9
- Assignees
- 5
- Inventors
- 30
- Latest grant
- 13 Nov 2018
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Toy having rotating element18 Nov 2003US 6,648,647 B2LeapFrog Enterprises, Inc.
- Phrase-composing device featuring interlocking collars28 Oct 2003US 6,638,072 B1
- Autocorrecting device suitable for learning a rule of grammar in a romance language4 Aug 2022US 2022/0246050 A1
- A board game apparatus and a method of placement of tokens on the same28 Nov 2019US 2019/0358521 A1
- Device and Process for Instructing Children in Goals and Success8 Aug 2019US 2019/0244534 A1
- Counting Wheel Odometer with Movable Decimal Point18 Aug 2016US 2016/0240103 A1
- Music teaching device31 Dec 2015US 2015/0379885 A1
Most cited
By later US patents
- Music teaching aid54US 6,031,172 AMusacus International Limited · 2000
- Educational device for dyslexic children23US 4,123,853 A1978
- Amusement device for spelling education21US 4,146,978 AMarvin Glass & Associates · 1979
- Teaching device17US 4,123,852 A1978
- Rotational educational apparatus17US 4,902,230 A1990