A01D 21/04
Digging machines with potato-picking implements: with rotating picking tools
Official title: with rotating picking tools
A01D21/04 (Digging machines with potato-picking implements: with rotating picking tools) appears on 4 US grants and 0 published applications in this corpus.
Search patents in A01D- Granted patents
- 4
- Published applications
- 0
- Assignees
- 2
- Inventors
- 6
- Latest grant
- 3 Jul 2001
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Finger rollers for agricultural implements3 Jul 2001US 6,253,535 B1ARTEMIS Kautschuk- und Kunststofftechnik GmbH & Cie
- Root crop harvester24 Dec 1985US 4,560,008 ANational Research Development Corporation
- Machine for pulling endives and other tap roots26 May 1981US 4,269,272 A
- Green onion harvester2 Nov 1976US 3,989,110 A
No published applications in this class yet.
Most cited
By later US patents