US1570304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Train door-control system
Assignee: Consolidated Car Heating Co Inc
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Filing: 1921-04-09
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Granted: 1926-01-19
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Expires: 1941-04-09
Abstract
No abstract record available.
Inventors
- 👤 Lee P Hynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:12
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/655; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/51
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) | 1929-01-18 | 1929-07-20 | 1930-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-01-18 | 1933-07-20 | 1934-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-01-18 | 1937-07-20 | 1938-01-19 | $7700.00 | Window Closed / Lapsed |