US2183969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stretching sheet metal
Assignee: MCKINNEY TOOL AND MANUFACTURING Co
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Filing: 1936-10-10
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Granted: 1939-12-19
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Expires: 1956-10-10
Abstract
No abstract record available.
Inventors
- 👤 Elsmere W Mckinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:09
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/02; B21D1/05; B21D13/00; B21D13/04; B21D13/045
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) | 1942-12-18 | 1943-06-19 | 1943-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-18 | 1947-06-19 | 1947-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-18 | 1951-06-19 | 1951-12-19 | $7700.00 | Window Closed / Lapsed |