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US2550591A
Expired / Lapsed
US
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Tube fitting assembly
Assignee: MALCOLM W FRASER
•
Filing: 1948-10-15
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Granted: 1951-04-24
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Expires: 1968-10-15
Abstract
No abstract record available.
Inventors
- 👤 John B Parsons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/098; F16L37/0985
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1173211A
Cited
US1848198A
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US1966718A
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US2004967A
Cited
US2212745A
Cited
US2336656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |