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(12) Patent: | (11) CA 1187581 |
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(21) Application Number: | 404778 |
(54) English Title: | TRAIN SPOTTING MEANS |
(54) French Title: | DISPOSITIF DE LOCALISATION D'UN TRAIN |
Status: | Expired |
(52) Canadian Patent Classification (CPC): |
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(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : | |
(74) Agent: | ROBIC, ROBIC & ASSOCIES/ASSOCIATES |
(74) Associate agent: | |
(45) Issued: | 1985-05-21 |
(22) Filed Date: | 1982-06-09 |
Availability of licence: | N/A |
(25) Language of filing: | French |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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PRECIS DE LA DIVULGATION:
Dispositif de localisation extrêmement précise
d'un train circulant sur une voie ferrée et ne nécessitant
aucun circuit complexe au sol. Le dispositif comprend, à
bord du train et en avant du premier essieu de ce dernier,
au moins un émetteur à accord fixe sur une fréquence radio-
électrique et un récepteur pourvu de deux capteurs. Au sol,
une boucle passive accordée sur la fréquence utilisée, est
disposée entre les deux files de rails. Des capteurs et
émetteur sont disposés de manière à ce qu'il n'y ait aucune
induction directe entre eux. Cette invention trouve son
application dans la conduite automatique des trains.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1187581 was not found.
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Title | Date |
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Forecasted Issue Date | 1985-05-21 |
(22) Filed | 1982-06-09 |
(45) Issued | 1985-05-21 |
Correction of Expired | 2002-05-22 |
Expired | 2002-06-09 |
There is no abandonment history.
Fee Type | Anniversary Year | Due Date | Amount Paid | Paid Date |
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Application Fee | $0.00 | 1982-06-09 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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JEUMONT-SCHNEIDER |
Past Owners on Record |
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None |