US1987841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armor plate
Assignee: Krupp Stahl AG
•
Filing: 1932-04-30
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Granted: 1935-01-15
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Expires: 1952-04-30
Abstract
No abstract record available.
Inventors
- 👤 Rittershausen Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:56
CPC Classifications
F; F41; F41H; F41H5/00; C; C21; C21D; C21D9/00; C21D9/42; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/44; F41H5/02; Y; Y10; Y10S; Y10S148/00; Y10S148/902
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) | 1938-01-14 | 1938-07-16 | 1939-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-01-14 | 1942-07-16 | 1943-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-01-14 | 1946-07-16 | 1947-01-15 | $7700.00 | Window Closed / Lapsed |