Patent US2849244A successfully refreshed from Google Patents.
US2849244A
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US
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O-ring seal for rotary hydraulic cylinder
Assignee: SP Manufacturing CORP
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Filing: 1955-12-19
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Granted: 1958-08-26
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Merritt B Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/302; B23B2260/00; B23B2260/126; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S285/00; Y10S285/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1851723A
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US2451269A
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US2536565A
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US2645450A
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US2659615A
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US2626166A
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US2701146A
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US2577858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |