US2141121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for blanking, notching, and scoring sheets
Assignee: Art Metal Construction Co
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Filing: 1937-10-22
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Granted: 1938-12-20
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Expires: 1957-10-22
Abstract
No abstract record available.
Inventors
- 👤 Charles E Attwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:36
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/40; B26F1/02; B26F1/12; B26F1/44; B26F2001/4463; Y; Y10; Y10S; Y10S83/00; Y10S83/917; Y10S83/923; Y10T; Y10T225/00; Y10T225/30; Y10T225/307; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0341; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831
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) | 1941-12-19 | 1942-06-20 | 1942-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-12-19 | 1946-06-20 | 1946-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-12-19 | 1950-06-20 | 1950-12-20 | $7700.00 | Window Closed / Lapsed |