US3024357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway signalling means
Assignee: Individual
•
Filing: 1958-01-10
•
Granted: 1962-03-06
•
Expires: 1978-01-10
Abstract
No abstract record available.
Inventors
- 👤 Hammond Roland Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:34
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1698864A
Cited
US1690506A
Cited
US1677816A
Cited
US1728563A
Cited
US1858897A
Cited
US1748965A
Cited
US1775675A
Cited
US1868489A
Cited
US2027246A
Cited
FR820714A
Cited
US2138878A
Cited
US2554056A
Cited
US2829851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |