Patent US2668504A successfully refreshed from Google Patents.
US2668504A
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US
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Jet nozzle
Assignee: MECKUM ENGINEERING Inc
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Filing: 1949-12-15
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Granted: 1954-02-09
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Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 John W Meckenstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:49
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/461; E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/902
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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |