US2418874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drawing flat metal blanks into shells
Assignee: Individual
•
Filing: 1944-06-13
•
Granted: 1947-04-15
•
Expires: 1964-06-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Hartwell H Gary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:50
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE113483C
Cited
US669330A
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US872168A
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US1457772A
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US1431041A
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US1580931A
Cited
US2255116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-14 | 1950-10-14 | 1951-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-14 | 1954-10-14 | 1955-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-14 | 1958-10-14 | 1959-04-15 | $7700.00 | Window Closed / Lapsed |