US3539760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam forge welding
Assignee: AMF Inc
•
Filing: 1968-11-27
•
Granted: 1970-11-10
•
Expires: 1988-11-27
Abstract
No abstract record available.
Inventors
- 👤 Wallace C Rudd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:19
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/0046; B23K15/0053; B23K15/006; B23K20/00; B23K20/04; B23K2101/00; B23K2101/04; B23K2101/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2716691A
Cited
US2844705A
Cited
US3089021A
Cited
US3131284A
Cited
US3136883A
Cited
US3230339A
Cited
DE1176296B
Cited
US3258576A
Cited
US3294928A
Cited
US3426173A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |