US2825431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tapered pole and process of forming the same
Assignee: Standard Railway Equipment Manufacturing Co
•
Filing: 1956-12-26
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Granted: 1958-03-04
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Expires: 1976-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard P Molt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:08
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/16; B21C37/18; B21C37/185; E; E04; E04H; E04H12/00; E04H12/02; E04H12/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49623; Y10T29/49631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190617013A
Cited
US1574563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |