US2163229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making die units and component parts thereof
Assignee: DANIEL J WILLIAMS
•
Filing: 1936-12-04
•
Granted: 1939-06-20
•
Expires: 1956-12-04
Abstract
No abstract record available.
Inventors
- 👤 Knebel Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:58
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/20; B21D37/205; Y; Y10; Y10T; Y10T408/00; Y10T408/03; Y10T408/55; Y10T408/561; Y10T408/5623; Y10T408/56245
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) | 1942-06-19 | 1942-12-19 | 1943-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-19 | 1946-12-19 | 1947-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-19 | 1950-12-19 | 1951-06-20 | $7700.00 | Window Closed / Lapsed |