Patent US2908803A successfully refreshed from Google Patents.
US2908803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistance welder
Assignee: FED MACHINE AND WELDER Co
•
Filing: 1957-04-22
•
Granted: 1959-10-13
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Williams
- 👤 James F Deffenbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:34
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/36; B23K11/362; B23K11/366
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1045911A
Cited
US1199408A
Cited
US1787115A
Cited
US1778628A
Cited
US2200112A
Cited
US2276925A
Cited
US2389034A
Cited
US2529634A
Cited
US2636066A
Cited
US2726371A
Cited
US2710327A
Cited
US2730600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |