Patent US3480756A successfully refreshed from Google Patents.
US3480756A
Expired / Lapsed
US
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Welding apparatus
Assignee: Boeing North American Inc
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Filing: 1966-06-20
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Granted: 1969-11-25
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Expires: 1986-06-20
Abstract
No abstract record available.
Inventors
- 👤 Fletcher R Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:06
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/127; B23K9/1272; B23K9/1276
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1975997A
Cited
US2921179A
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US3076889A
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US3068386A
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US3204081A
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US3268805A
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US3201562A
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US3359486A
Cited
US3290479A
Cited
US3299250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |