Patent FR515163A successfully refreshed from Google Patents.
FR515163A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements in compressed air engines by the hydraulic force of the tide
Assignee: Individual
•
Filing: 1920-05-05
•
Granted: 1921-03-25
•
Expires: 1940-05-05
Abstract
No abstract record available.
Inventors
- 👤 John Albert Knowlton
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-05 17:00
CPC Classifications
F; F03; F03B; F03B13/00; F03B13/12; F03B13/26; F03B13/266
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.