US2324903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fluid compressor or motor
Assignee: Individual
•
Filing: 1939-01-28
•
Granted: 1943-07-20
•
Expires: 1959-01-28
Abstract
No abstract record available.
Inventors
- 👤 Beckman Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/04; F01C1/00; F01C1/30; F01C1/34; F01C1/344; F01C1/3441; F01C1/3442
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
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-07-19 | 1947-01-18 | 1947-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-07-19 | 1951-01-18 | 1951-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-07-19 | 1955-01-18 | 1955-07-20 | $7700.00 | Window Closed / Lapsed |