Patent US2591641A successfully refreshed from Google Patents.
US2591641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic installation
Assignee: Individual
•
Filing: 1947-07-24
•
Granted: 1952-04-01
•
Expires: 1967-07-24
Abstract
No abstract record available.
Inventors
- 👤 Troendle Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:45
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/4673; Y10T137/7722; Y10T137/7723
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US735544A
Cited
US1471800A
Cited
US2294396A
Cited
US2294397A
Cited
US2306382A
Cited
US2345475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |