Patent US2768844A successfully refreshed from Google Patents.
US2768844A
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Hose coupling reducer having internal and external stepped sleeves
Assignee: EASTMAN Manufacturing Co
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Filing: 1953-03-19
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Granted: 1956-10-30
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Expires: 1973-03-19
Abstract
No abstract record available.
Inventors
- 👤 Schadeberg George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:45
CPC Classifications
F; F16; F16L; F16L31/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49909; Y10T29/49913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US407037A
Cited
US748301A
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US1085095A
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US1382840A
Cited
FR711203A
Cited
US1977564A
Cited
FR878805A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |