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Waltrop, Germany

Claus Bertram

USPTO Granted Patents = 3

Average Co-Inventor Count = 1.5

ph-index = 3

Forward Citations = 39(Granted Patents)

Company Filing History:

O&k Orenstein & Koppel Aktiengesellschaft

O & K Orenstein & Koppel Aktiengesellschaft and Lorenz Gmbh

Years Active: 1978-1981

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3 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4284280 - Sealing for machine elements which move back and forth (1981-08-18),

2. 4252147 - Rotary connection for passage of hydraulic oil (1981-02-24),

3. 4126155 - Valve piston for hydraulic control valve (1978-11-21),

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