Patent US1651881A successfully refreshed from Google Patents.
US1651881A
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US
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Pumping system
Assignee: Individual
•
Filing: 1926-12-01
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Granted: 1927-12-06
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Expires: 1946-12-01
Abstract
No abstract record available.
Inventors
- 👤 Royal E Frickey
- 👤 Layne William Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:59
CPC Classifications
F; F04; F04D; F04D7/00; F04D7/02; F04D7/06; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/083; F04D29/00; F04D29/58; F04D29/586; F04D29/5866
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) | 1930-12-05 | 1931-06-06 | 1931-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-05 | 1935-06-06 | 1935-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-05 | 1939-06-06 | 1939-12-06 | $7700.00 | Window Closed / Lapsed |