Patent US3914066A successfully refreshed from Google Patents.
Patent US2209059A successfully refreshed from Google Patents.
Patent DE339761C successfully refreshed from Google Patents.
← Back to Patent Explorer
DE339761C Expired / Lapsed DE ⏱️ 0.0 years remaining

Internal combustion engine with two pistons rotating in a ring cylinder

Assignee: REINHARD ALT
•
Filing: 1920-01-20
•
Granted: 1921-08-06
•
Expires: 1940-01-20
📄 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 2026-11-08 18:02
CPC Classifications
F; F01; F01C; F01C3/00; F01C3/02

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