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Patent US2947074A successfully refreshed from Google Patents.
US2947074A
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Nozzle puller
Assignee: Hughes Tool Co
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Filing: 1957-02-11
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Granted: 1960-08-02
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Expires: 1977-02-11
Abstract
No abstract record available.
Inventors
- 👤 Clarence M Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:25
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/60; E21B10/61; B; B25; B25B; B25B27/00; E21B10/62; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49815; Y10T29/49822; Y10T29/53; Y10T29/53909; Y10T29/53943; Y10T29/53952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1465124A
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US1504650A
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US1544246A
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US1521381A
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US1576389A
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US2136875A
Cited
US2160652A
Cited
US2794667A
Cited
US2796282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |