US2808782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion and abrasion resistant sump pump for slurries
Assignee: Galigher Co
•
Filing: 1953-08-31
•
Granted: 1957-10-08
•
Expires: 1973-08-31
Abstract
No abstract record available.
Inventors
- 👤 John W Thompson
- 👤 Robert A Wilson
- 👤 Robert B Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:26
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02; Y; Y10; Y10S; Y10S415/00; Y10S415/901
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |