US2673480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for shaping bimetallic articles
Assignee: SK Wellman Corp
•
Filing: 1946-08-21
•
Granted: 1954-03-30
•
Expires: 1966-08-21
Abstract
No abstract record available.
Inventors
- 👤 Samuel K Wellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:52
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/04; B21; B21D; B21D11/00; B21D11/20; B21D11/203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US145129A
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US1030865A
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US1367015A
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US1547250A
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US1776436A
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US1729410A
Cited
US1980570A
Cited
US2101266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |