US3410982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding of structural shapes by high frequency current
Assignee: AMF Inc
•
Filing: 1965-03-02
•
Granted: 1968-11-12
•
Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Morris Jack
- 👤 Kohler Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:31
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/01; B23K13/02; B23K11/00; B23K11/06; B23K13/04; B23K13/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1606894A
Cited
US2584189A
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US2821619A
Cited
US2827551A
Cited
US3010011A
Cited
US3089947A
Cited
US3047712A
Cited
US3327088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |