Patent US3396261A successfully refreshed from Google Patents.
US3396261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric hand-operated spot welder
Assignee: Individual
•
Filing: 1964-07-21
•
Granted: 1968-08-06
•
Expires: 1984-07-21
Abstract
No abstract record available.
Inventors
- 👤 Kirsch Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:26
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31; B23K11/314
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1153384A
Cited
GB532648A
Cited
US2318023A
Cited
US2413783A
Cited
US2689295A
Cited
US2749417A
Cited
US2785282A
Cited
US2860231A
Cited
US2832882A
Cited
US3008034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |