Patent US7817964B2 successfully refreshed from Google Patents.
US2189504A
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Assignee: Individual
•
Filing: 1938-10-25
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Granted: 1940-02-06
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Expires: 1958-10-25
Abstract
No abstract record available.
Inventors
- 👤 Klaus Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:46
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/32; A; A63; A63D; A63D5/00; A63D5/04; A63D2005/048
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) | 1943-02-05 | 1943-08-07 | 1944-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-02-05 | 1947-08-07 | 1948-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-02-05 | 1951-08-07 | 1952-02-06 | $7700.00 | Window Closed / Lapsed |