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Patent US2720845A successfully refreshed from Google Patents.
US2720845A
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Ejector nozzle
Assignee: Automatic Pump and Softener Corp
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Filing: 1951-12-14
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Granted: 1955-10-18
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Expires: 1971-12-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert A Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:26
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/461; Y; Y10; Y10T; Y10T137/00; Y10T137/7069; Y10T137/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US556291A
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US758206A
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US960057A
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US1536630A
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US1828134A
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US2159927A
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US2230323A
Cited
US2518895A
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US2522928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |