US2180075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail spacing apparatus
Assignee: Individual
•
Filing: 1938-05-20
•
Granted: 1939-11-14
•
Expires: 1958-05-20
Abstract
No abstract record available.
Inventors
- 👤 Earl B Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:03
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/006; B21B; B21B43/00; B23; B23Q; B23Q7/00; B23Q7/16; F; F27; F27D; F27D3/00; B21B1/00; B21B1/08; B21B1/085; F27B; F27B9/00; F27B9/14; F27B9/20; F27B9/24; F27B9/2407; F27D2003/0001; F27D2003/0002; F27D2003/0034; F27D2003/0042; F27D2003/0078; Y; Y10; Y10S; Y10S198/00; Y10S198/952
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-11-13 | 1943-05-15 | 1943-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-13 | 1947-05-15 | 1947-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-13 | 1951-05-15 | 1951-11-14 | $7700.00 | Window Closed / Lapsed |