B23C 2235/36
Ring keys
B23C2235/36 (Ring keys) appears on 7 US grants and 0 published applications in this corpus.
Search patents in B23C- Granted patents
- 7
- Published applications
- 0
- Assignees
- 3
- Inventors
- 10
- Latest grant
- 25 Oct 1983
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Tubular key cutting machine25 Oct 1983US 4,411,567 A
- Tubular key cutting machine20 Apr 1982US 4,325,662 A
- Tubular key manufacturing machine13 Apr 1982US 4,324,513 A
- Tubular key duplicating machine9 Feb 1982US 4,314,780 AUnican Security Systems, Ltd.
- Duplicating machine for tubular keys20 May 1980US 4,203,693 ATaylor Lock Company
No published applications in this class yet.
Most cited
By later US patents