US2552876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal pumping and siphoning
Assignee: Ajax Engineering Corp
•
Filing: 1947-02-04
•
Granted: 1951-05-15
•
Expires: 1967-02-04
Abstract
No abstract record available.
Inventors
- 👤 Tama Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:31
CPC Classifications
F; F04; F04F; F04F10/00; F04F10/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB126947A
Cited
US1660407A
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US1944733A
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US1983580A
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US1983579A
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US2083022A
Cited
US2224982A
Cited
US2397785A
Cited
US2386369A
Cited
US2536325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |