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US3437180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way automatic brake adjuster
Assignee: Universal Railway Devices Co
•
Filing: 1967-06-27
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Granted: 1969-04-08
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Expires: 1987-06-27
Abstract
No abstract record available.
Inventors
- 👤 Eldred H Natschke
- 👤 Frederick W St Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:20
CPC Classifications
B; B61; B61H; B61H15/00; B61H15/0035; B61H15/0042; B61H15/0057
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3177985A
Cited
US3326335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |