US2446887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trolley yoke structure
Assignee: NEW CASTLE PRODUCTS
•
Filing: 1944-06-19
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Granted: 1948-08-10
•
Expires: 1964-06-19
Abstract
No abstract record available.
Inventors
- 👤 William A Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/0626; E05D15/063; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/64; E05Y2600/00; E05Y2600/50; E05Y2600/52; E05Y2600/528
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US210485A
Cited
US1863233A
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US1067725A
Cited
US1382365A
Cited
US1832203A
Cited
US1832050A
Cited
US2234481A
Cited
US2322529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |