US1302284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic device.
Assignee: Hitachi Rail STS USA Inc
•
Filing: 1916-02-02
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Granted: 1919-04-29
•
Expires: 1936-02-02
Abstract
No abstract record available.
Inventors
- 👤 Charles R Beall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:09
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/34; H01H71/345
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) | 1922-04-28 | 1922-10-28 | 1923-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-04-28 | 1926-10-28 | 1927-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-04-28 | 1930-10-28 | 1931-04-29 | $7700.00 | Window Closed / Lapsed |