US2450361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spike fastening means for railway tracks
Assignee: Individual
•
Filing: 1945-04-07
•
Granted: 1948-09-28
•
Expires: 1965-04-07
Abstract
No abstract record available.
Inventors
- 👤 Richard T Scholes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:18
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/02; E01B9/04; E01B9/06; E01B9/28; E01B9/30; E01B9/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US285373A
Cited
US778625A
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FR432395A
Cited
US1227083A
Cited
US2154931A
Cited
US2196534A
Cited
US2218156A
Cited
US2317435A
Cited
US2348331A
Cited
US2399011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |