Patent US2053569A successfully refreshed from Google Patents.
US2053569A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1934-10-01
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Granted: 1936-09-08
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Expires: 1954-10-01
Abstract
No abstract record available.
Inventors
- 👤 Nicholas M Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:40
CPC Classifications
B; B27; B27G; B27G5/00; B27G5/02; B23; B23D; B23D51/00; B23D51/02; B23D51/025; B23D51/026; B23D51/029; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487; Y10T83/7553; Y10T83/7573
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) | 1939-09-08 | 1940-03-09 | 1940-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-08 | 1944-03-09 | 1944-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-08 | 1948-03-09 | 1948-09-08 | $7700.00 | Window Closed / Lapsed |