Patent US4829578A successfully refreshed from Google Patents.
← Back to Patent Explorer
DE660484C Expired / Lapsed DE ⏱️ 0.0 years remaining

Rotary lobe pump for drip liquid means, which has a sickle-shaped working space and working chambers, which open into suction and pressure spaces arranged within the working chambers

Assignee: Individual
•
Filing: 1931-10-04
•
Granted: 1938-05-25
•
Expires: 1951-10-04
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-28 13:06
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F01; F01C; F01C21/00; F01C21/18; F01C21/186; F04C14/00; F16; F16H; F16H39/00; F16H39/04; F16H39/06; F16H39/22; F04C2/344

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag