US1958646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical relay
Assignee: Hitachi Rail STS USA Inc
•
Filing: 1933-08-19
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Granted: 1934-05-15
•
Expires: 1953-08-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence S Snavely
- 👤 David P Fitzsimmons
- 👤 Norman F Agnew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:29
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H1/00; H01H1/12; H01H1/14; H01H1/24; H01H1/26; H01H2001/265
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) | 1937-05-14 | 1937-11-13 | 1938-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-05-14 | 1941-11-13 | 1942-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-05-14 | 1945-11-13 | 1946-05-15 | $7700.00 | Window Closed / Lapsed |