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EP0028440
European procedure
Extract from the Register of European Patents
EP About this file: EP0028440
| EP0028440 - A circuit for handling conversation data in a distributed processing telex exchange [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 18.10.1985 Database last updated on 26.03.2026 | Most recent event Tooltip | 18.10.1985 | No opposition filed within time limit | published on 18.12.1985 [1985/51] | Applicant(s) | For all designated states Frederick Electronics Corporation 1 Hayward Road Frederick Maryland 21701 / US | [N/P] |
| Former [1981/19] | For all designated states Frederick Electronics Corporation 1 Hayward Road Frederick Maryland 21701 / US | Inventor(s) | 01 /
Spaniol, John Ward 11940 Laurelwood Drive Studio City, California 91604 / US | 02 /
Bowerman, John J. Route 1 Box 34 Rock Ridge, Maryland 21778 / US | 03 /
Perlman, Marvin 11000 Dempsey Avenue Granada Hills, California 91344 / US | [1981/19] | Representative(s) | Meddle, Alan L. FORRESTER & BOEHMERT, Pettenkoferstrasse 20-22 80336 München / DE | [N/P] |
| Former [1981/19] | Meddle, Alan Leonard FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München / DE | Application number, filing date | 80301384.6 | 28.04.1980 | [1981/19] | Priority number, date | US19790092424 | 06.11.1979 Original published format: US 92424 | [1981/19] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0028440 | Date: | 13.05.1981 | Language: | EN | [1981/19] | Type: | A3 Search report | No.: | EP0028440 | Date: | 02.12.1981 | Language: | EN | [1981/48] | Type: | B1 Patent specification | No.: | EP0028440 | Date: | 05.12.1984 | Language: | EN | [1984/49] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 28.09.1981 | Classification | IPC: | H04L11/00, H04Q3/54, G06F15/16 | [1981/19] | CPC: |
H04L12/50 (EP,US)
| Designated contracting states | DE, FR [1985/02] |
| Former [1981/19] | BE, DE, FR, GB | Title | German: | Schaltung zur Behandlung von Gesprächsdaten in einer Telexzentrale mit verteilter Verarbeitung | [1981/19] | English: | A circuit for handling conversation data in a distributed processing telex exchange | [1981/19] | French: | Circuit pour le maniement de données de conversation dans un central télex à traitement distribué | [1981/19] | File destroyed: | 12.06.1999 | Examination procedure | 26.05.1982 | Examination requested [1982/33] | 10.08.1983 | Despatch of a communication from the examining division (Time limit: M04) | 16.12.1983 | Reply to a communication from the examining division | 28.02.1984 | Despatch of communication of intention to grant (Approval: ) | 22.05.1984 | Communication of intention to grant the patent | 12.07.1984 | Fee for grant paid | 12.07.1984 | Fee for publishing/printing paid | Opposition(s) | 06.09.1985 | No opposition filed within time limit [1985/51] | Fees paid | Renewal fee | 22.03.1982 | Renewal fee patent year 03 | 17.03.1983 | Renewal fee patent year 04 | 11.04.1984 | Renewal fee patent year 05 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Documents cited: | Search | INTERNATIONAL SWITCHING SYMPOSIUM, May 7-11, 1979, Paris, FR A.K. SHRIVASTAVA et al. "Microprocessor based electronic teleprinter switching system with distributed control" pages 237-241 | INTERNATIONAL SWITCHING SYMPOSIUM, Kyoto, October 25-29, 1976, Tokyo, JP M. HOCHREUTENER "The application of the T200 telex and data switching system in Switzerland" pages 431-3-1- to 431-3-8 | INTERNATIONAL SWITCHING SYMPOSIUM, Kyoto, October 25-29, 1976, Tokyo, JP J.M. LEKSTRUM et al. "The ELTEX telecommunications exchange" pages 522-5-1 to 522-5-6 |