Patent US1510486A successfully refreshed from Google Patents.
US1510486A
Expired / Lapsed
US
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Railway signaling
Assignee: Hitachi Rail STS USA Inc
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Filing: 1917-07-25
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Granted: 1924-10-07
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Expires: 1937-07-25
Abstract
No abstract record available.
Inventors
- 👤 Lloyd V Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:28
CPC Classifications
B; B61; B61L; B61L23/00; B61L23/08; B61L23/14; B61L23/16; B61L23/166
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) | 1927-10-07 | 1928-04-07 | 1928-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-10-07 | 1932-04-07 | 1932-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-10-07 | 1936-04-07 | 1936-10-07 | $7700.00 | Window Closed / Lapsed |