US2896126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightning protection for an electronic track circuit
Assignee: SPX Technologies Inc
•
Filing: 1956-09-04
•
Granted: 1959-07-21
•
Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Marcian E Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:10
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/20; H; H02; H02H; H02H9/00; H02H9/04; H04; H04M; H04M1/00; H04M1/738; H04M1/74; H04M1/745
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2538177A
Cited
US2748274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |