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(12) Patent: | (11) CA 1313244 |
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(21) Application Number: | 1313244 |
(54) English Title: | ESCALATOR SERVICE SPEED CONTROL |
(54) French Title: | COMMANDE DE VITESSE POUR ESCALIER MECANIQUE POUR FINS DE SERVICE |
Status: | Expired and beyond the Period of Reversal |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | GOWLING WLG (CANADA) LLP |
(74) Associate agent: | |
(45) Issued: | 1993-01-26 |
(22) Filed Date: | 1986-05-09 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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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.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
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Description | Date |
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Inactive: IPC assigned | 2021-03-11 |
Inactive: IPC assigned | 2021-03-11 |
Inactive: IPC removed | 2005-12-31 |
Inactive: Adhoc Request Documented | 1997-01-26 |
Time Limit for Reversal Expired | 1996-07-27 |
Letter Sent | 1996-01-26 |
Grant by Issuance | 1993-01-26 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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OTIS ELEVATOR COMPANY |
Past Owners on Record |
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DIETRICH E. HERRMANN |