US1645705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric spot-welding apparatus
Assignee: ThyssenKrupp Budd Co
•
Filing: 1923-05-04
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Granted: 1927-10-18
•
Expires: 1943-05-04
Abstract
No abstract record available.
Inventors
- 👤 Ledwinka Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:17
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31; B23K11/36; B23K11/362; B23K11/366
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1930-10-17 | 1931-04-18 | 1931-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-17 | 1935-04-18 | 1935-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-17 | 1939-04-18 | 1939-10-18 | $7700.00 | Window Closed / Lapsed |