Patent US3023496A successfully refreshed from Google Patents.
US3023496A
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Method of welding flexible metal pipe units and end fittings without the addition of weld material
Assignee: ENGINEERING DEVELOPMENTS Inc
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Filing: 1958-09-05
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Granted: 1962-03-06
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Expires: 1978-09-05
Abstract
No abstract record available.
Inventors
- 👤 Millar John Humphrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:06
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/26; B; B21; B21D; B21D39/00; B21D39/04; 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)
US2142357A
Cited
US2216468A
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US2363586A
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US2405542A
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US2516631A
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US2490686A
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US2666657A
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US2678836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |