GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 161 273 182 patent documents

This week's update (24/01/2025 12:00 CET):

164 159 new documents added

1 246 381 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 0211137 A3 19870603 - POWER DEVICE

Title (en)

POWER DEVICE

Publication

EP 0211137 A3 19870603 (DE)

Application

EP 86103294 A 19860312

Priority

DE 3519565 A 19850531

Abstract (en)

[origin: ES8705582A1] A driving apparatus for producing a to-and-fro movement and having four plunger cylinders and four external non-return valves. Such driving apparatus is distinguished by a particularly simple construction.

IPC 1-7

F15B 11/22

IPC 8 full level

F15B 11/22 (2006.01)

CPC (source: EP US)

F15B 11/22 (2013.01 - EP US)

Citation (search report)

[Y] DE 1213248 B 19660324 - FRORIEP GMBH MASCHF
[Y] DE 1812208 A1 19691218 - WHITEMAN MFG COMPANY
[A] DE 2936264 A1 19810319 - DAUTEL EMIL GMBH CO KG
[A] FR 2380218 A1 19780908 - KEMPF & CO AG [CH]

Designated contracting state (EPC)

BE DE FR GB IT

DOCDB simple family (publication)

DE 3519565 A1 19861204; BR 8601711 A 19861216; EP 0211137 A2 19870225; EP 0211137 A3 19870603; ES 555481 A0 19870501; ES 8705582 A1 19870501; US 4681021 A 19870721; ZA 862111 B 19861126

DOCDB simple family (application)

DE 3519565 A 19850531; BR 8601711 A 19860416; EP 86103294 A 19860312; ES 555481 A 19860529; US 86044486 A 19860507; ZA 862111 A 19860321