GB8720497D0 - Optical mark detector - Google Patents
Optical mark detectorInfo
- Publication number
- GB8720497D0 GB8720497D0 GB878720497A GB8720497A GB8720497D0 GB 8720497 D0 GB8720497 D0 GB 8720497D0 GB 878720497 A GB878720497 A GB 878720497A GB 8720497 A GB8720497 A GB 8720497A GB 8720497 D0 GB8720497 D0 GB 8720497D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical mark
- mark detector
- detector
- optical
- mark
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878720497A GB8720497D0 (en) | 1987-08-29 | 1987-08-29 | Optical mark detector |
PCT/GB1988/000697 WO1989002133A1 (en) | 1987-08-29 | 1988-08-24 | Optical mark detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878720497A GB8720497D0 (en) | 1987-08-29 | 1987-08-29 | Optical mark detector |
Publications (1)
Publication Number | Publication Date |
---|---|
GB8720497D0 true GB8720497D0 (en) | 1987-10-07 |
Family
ID=10623080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB878720497A Pending GB8720497D0 (en) | 1987-08-29 | 1987-08-29 | Optical mark detector |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB8720497D0 (en) |
WO (1) | WO1989002133A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3609305A (en) * | 1969-10-29 | 1971-09-28 | Bridge Data Products Inc | Card reader |
US3684868A (en) * | 1970-10-29 | 1972-08-15 | Ncr Co | Color bar code tag reader with light-emitting diodes |
US3737629A (en) * | 1971-06-09 | 1973-06-05 | Addressograph Multigraph | Optical code reader |
US3786238A (en) * | 1972-09-05 | 1974-01-15 | Addressograph Multigraph | Optical reader |
US4019065A (en) * | 1975-12-24 | 1977-04-19 | International Business Machines Corporation | Multiplexing document card reader with convex lens |
US4020327A (en) * | 1976-01-30 | 1977-04-26 | Bell Telephone Laboratories, Incorporated | Apparatus for reading optical codes |
-
1987
- 1987-08-29 GB GB878720497A patent/GB8720497D0/en active Pending
-
1988
- 1988-08-24 WO PCT/GB1988/000697 patent/WO1989002133A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO1989002133A1 (en) | 1989-03-09 |
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