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US2019934A
Expired / Lapsed
US
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Tool and method of making the same
Assignee: Krupp Stahl AG
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Filing: 1930-05-29
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Granted: 1935-11-05
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Expires: 1950-05-29
Abstract
No abstract record available.
Inventors
- 👤 Schroter Karl
- 👤 Wolff Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:44
CPC Classifications
B; B23; B23K; B23K28/00; B23K28/003; Y; Y10; Y10T; Y10T407/00; Y10T407/26; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/125; Y10T428/12507; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12861; Y10T428/12951; Y10T428/12986
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) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |