US3522114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of steel for electrical sheet material
Assignee: Eisenwerke Gesellschaf Maximilianshuette mbH
•
Filing: 1966-05-05
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Granted: 1970-07-28
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Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Helmut Knuppel
- 👤 Karl Brotzmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:55
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/02; C21; C21C; C21C7/00; C21C7/10; C21D; C21D8/00; C21D8/12; C21D8/1205; C21D8/1244; C21D8/1255; C21D8/1272
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1277523A
Cited
GB338409A
Cited
US2144200A
Cited
US3021237A
Cited
US3042556A
Cited
US3253909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |