US2217172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drawing press and process
Assignee: Birdsboro Steel Foundry & Mach
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Filing: 1935-06-29
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Granted: 1940-10-08
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Expires: 1955-06-29
Abstract
No abstract record available.
Inventors
- 👤 Henri P L Laussucq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/007; B21; B21D; B21D24/00; B21D24/02; B21D24/10; B21D24/14
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |