US2841087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical centrifugal pumping apparatus
Assignee: CH Wheeler Manufacturing Co
•
Filing: 1955-12-14
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Granted: 1958-07-01
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Expires: 1975-12-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Macmeekin
- 👤 Edward G Hilficker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:57
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/12; F04D13/14; F04D1/00; F04D1/06; F04D29/00; F04D29/08; F04D29/086; F04D29/60; F04D29/605; F04D29/606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |