Patent EP0560141A1 successfully refreshed from Google Patents.
US2017026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid pump
Assignee: Allis Chalmers Corp
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Filing: 1933-10-28
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Granted: 1935-10-08
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Expires: 1953-10-28
Abstract
No abstract record available.
Inventors
- 👤 Frank R Forrest
- 👤 Frederick I Lindau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02; F04D7/06; F04D29/00; F04D29/60; F04D29/62; F04D29/628
Claims Analysis
Total Claims: 0
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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) | 1938-10-07 | 1939-04-08 | 1939-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-07 | 1943-04-08 | 1943-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-07 | 1947-04-08 | 1947-10-08 | $7700.00 | Window Closed / Lapsed |