Patent US2565737A successfully refreshed from Google Patents.
US2565737A
Expired / Lapsed
US
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Duct slip joint
Assignee: Boeing Co
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Filing: 1949-06-07
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Granted: 1951-08-28
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Expires: 1969-06-07
Abstract
No abstract record available.
Inventors
- 👤 John A Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:15
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/14; F16L11/18; F16L21/00; F16L21/02; F16L21/025; F16L27/00; F16L27/10; F16L27/1004; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US611442A
Cited
US2494659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |