US2446194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump construction
Assignee: Individual
•
Filing: 1943-07-30
•
Granted: 1948-08-03
•
Expires: 1963-07-30
Abstract
No abstract record available.
Inventors
- 👤 Samiran David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:35
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/003; F04C15/0088; F04C2/00; F04C2/08; F04C2/12; F04C2/126
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US12350A
Cited
US378042A
Cited
US804657A
Cited
US960233A
Cited
GB191010945A
Cited
US1111307A
Cited
US1475683A
Cited
US1648092A
Cited
US1486837A
Cited
US1781619A
Cited
GB384256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-03 | 1952-02-02 | 1952-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-03 | 1956-02-02 | 1956-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-03 | 1960-02-02 | 1960-08-03 | $7700.00 | Window Closed / Lapsed |