G06K 21/002
Selecting of marginally notched cards
Official title: {Selecting of marginally notched cards (card filling arrangements B42F17/00)}
G06K21/002 (Selecting of marginally notched cards) appears on 13 US grants and 0 published applications in this corpus.
Search patents in G06K- Granted patents
- 13
- Published applications
- 0
- Assignees
- 10
- Inventors
- 16
- Latest grant
- 22 Jul 1986
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Machine-retrievable card and card retrieval apparatus and method therefor22 Jul 1986US 4,601,397 AAccess Co., Ltd.
- Card sorting machine18 Mar 1986US 4,576,288 ATanaka Seiko Co. Ltd.
- Card retainer and control means for information retrieval devices22 Jan 1985US 4,495,066 AMicrosize, Inc.
- Electro-mechanical retrieval device for randomly filed materials20 Dec 1983US 4,421,237 ARandomatic Data Systems, Inc.
- Machine-retrievable card and card retrieval apparatus and method therefor18 May 1982US 4,330,063 AO. K. Partnership
No published applications in this class yet.
Most cited
By later US patents
- Card retrieval system14US 4,076,125 ASharp Kabushiki Kaisha · 1978
- Document retrieval system6US 4,327,834 AO. K. Partnership · 1982
- Random automatic selector4US 4,190,164 AMazda Cartex Company, Limited · 1980
- Electro-mechanical retrieval device for randomly filed materials3US 4,421,237 ARandomatic Data Systems, Inc. · 1983
- Machine-retrievable card and card retrieval apparatus and method therefor2US 4,601,397 AAccess Co., Ltd. · 1986