US3009544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit brake arrangement
Assignee: American Steel Foundries
•
Filing: 1958-05-29
•
Granted: 1961-11-21
•
Expires: 1978-05-29
Abstract
No abstract record available.
Inventors
- 👤 Maloney Bernard
- 👤 Walter R Polanin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:53
CPC Classifications
B; B61; B61H; B61H1/00; B61H1/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2503489A
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US2913071A
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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) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |