US2468642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pumping device
Assignee: Deming Co
•
Filing: 1945-07-24
•
Granted: 1949-04-26
•
Expires: 1965-07-24
Abstract
No abstract record available.
Inventors
- 👤 Shallenberg Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:12
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/464
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US857768A
Cited
US1016085A
Cited
US1998006A
Cited
US2080624A
Cited
US2150799A
Cited
US2344058A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |