US2622309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for filing the slots of laminated cores
Assignee: Allis Chalmers Corp
•
Filing: 1948-05-21
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Granted: 1952-12-23
•
Expires: 1968-05-21
Abstract
No abstract record available.
Inventors
- 👤 Hauk Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:18
CPC Classifications
B; B23; B23D; B23D67/00; Y; Y10; Y10T; Y10T407/00; Y10T407/18; Y10T407/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876468A
Cited
US1031637A
Cited
US1041240A
Cited
US1160452A
Cited
US1939038A
Cited
US2205979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |