US3480756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding apparatus
Assignee: Boeing North American Inc
•
Filing: 1966-06-20
•
Granted: 1969-11-25
•
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 16:25
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/127; B23K9/1272; B23K9/1276
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1975997A
Cited
US2921179A
Cited
US3076889A
Cited
US3068386A
Cited
US3204081A
Cited
US3268805A
Cited
US3201562A
Cited
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 |