Patent US2404524A successfully refreshed from Google Patents.
US2404524A
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Pumping mechanism
Assignee: W C NORRIS MANUFACTURER Inc
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Filing: 1945-04-12
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Granted: 1946-07-23
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Expires: 1965-04-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:05
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F04B43/10; F04B43/113; F04B47/00; F04B47/06; F04B47/08
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) | 1949-07-22 | 1950-01-21 | 1950-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-22 | 1954-01-21 | 1954-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-22 | 1958-01-21 | 1958-07-23 | $7700.00 | Window Closed / Lapsed |