Patent US1984887A successfully refreshed from Google Patents.
US1984887A
Expired / Lapsed
US
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Angle cock device
Assignee: Westinghouse Air Brake Co
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Filing: 1932-03-12
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Granted: 1934-12-18
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Expires: 1952-03-12
Abstract
No abstract record available.
Inventors
- 👤 Albert A Mackert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/04; B60T17/043
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) | 1937-12-17 | 1938-06-18 | 1938-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-12-17 | 1942-06-18 | 1942-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-12-17 | 1946-06-18 | 1946-12-18 | $7700.00 | Window Closed / Lapsed |