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Patent US2737247A successfully refreshed from Google Patents.
US2737247A
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US
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Well packer apparatus
Assignee: Baker Hughes Oilfield Operations LLC
•
Filing: 1953-07-17
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Granted: 1956-03-06
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Expires: 1973-07-17
Abstract
No abstract record available.
Inventors
- 👤 Reuben C Baker
- 👤 Austin Benjamin Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:53
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; Y; Y10; Y10S; Y10S285/00; Y10S285/922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2051713A
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US2178999A
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US2189703A
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US2315921A
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US2313263A
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US2401119A
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US2665763A
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US2671512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |