US2966582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad signalling
Assignee: Individual
•
Filing: 1957-03-21
•
Granted: 1960-12-27
•
Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Wachtel Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:22
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/16; B61L1/163; B61L1/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1504193A
Cited
FR896657A
Cited
US2492388A
Cited
US2454687A
Cited
US2753550A
Cited
USRE24303E
Cited
US2789254A
Cited
US2828480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |