US2523152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support for semitrailers
Assignee: WEST MICHIGAN STEEL FOUNDRY CO
•
Filing: 1945-06-14
•
Granted: 1950-09-19
•
Expires: 1965-06-14
Abstract
No abstract record available.
Inventors
- 👤 Carl G Seyferth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:26
CPC Classifications
B; B60; B60S; B60S9/00; B60S9/14; B60S9/16; B60D; B60D1/00; B60D1/58; B60D1/66
Claims Analysis
Total Claims: 0
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US2358488A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |