US2556426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump structure
Assignee: Ex-Cell-O Corp
•
Filing: 1944-12-01
•
Granted: 1951-06-12
•
Expires: 1964-12-01
Abstract
No abstract record available.
Inventors
- 👤 James F Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:38
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/14; F04B1/141; F04B1/145; F04B23/00; F04B23/04; F04B23/06; F04B3/00; F04B49/00; F04B49/16; F04B53/00; F04B53/16; F04B53/162; F04B53/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1535643A
Cited
US2093003A
Cited
US2160735A
Cited
US2214257A
Cited
US2265232A
Cited
US2310370A
Cited
US2331462A
Cited
US2383483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |