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Patent US2669467A successfully refreshed from Google Patents.
US2669467A
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Welded tubing end construction
Assignee: Individual
•
Filing: 1950-04-04
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Granted: 1954-02-16
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Expires: 1970-04-04
Abstract
No abstract record available.
Inventors
- 👤 Edwin C Wolferz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:02
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/02; F16L23/024; F16L23/028; F16L23/0286; F16B; F16B2200/00; F16B2200/50; F16B2200/503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE120462C
Cited
US1270045A
Cited
DE660065C
Cited
US2136474A
Cited
US2157357A
Cited
US2216033A
Cited
US2308307A
Cited
US2496677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |