Patent US2805086A successfully refreshed from Google Patents.
US2805086A
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Liquid-tight and gas-tight rotating tubular joints
Assignee: ROTHERM ENGINEERING Co IN
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Filing: 1952-10-30
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Granted: 1957-09-03
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Expires: 1972-10-30
Abstract
No abstract record available.
Inventors
- 👤 Ephraim H Shumaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:52
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38; F16L; F16L27/00; F16L27/02; F16L27/023; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0812; F16L27/082; F16L39/00; F16L39/04; D; D21; D21F; D21F5/00; D21F5/02; D21F5/021
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |