US2912563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for welding and cutting of sheet metal
Assignee: FIRM WALZWERK NEVIGES
•
Filing: 1957-08-06
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Granted: 1959-11-10
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Expires: 1977-08-06
Abstract
No abstract record available.
Inventors
- 👤 Willy H Schlieker
- 👤 Kunz Friedrich
- 👤 Pletsch Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:54
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/08; B23K11/087; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/51; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1693800A
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US1811522A
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US2057794A
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US2247766A
Cited
US2369830A
Cited
US2351922A
Cited
US2394466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |