US1805014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail locking means
Assignee: Individual
•
Filing: 1928-03-22
•
Granted: 1931-05-12
•
Expires: 1948-03-22
Abstract
No abstract record available.
Inventors
- 👤 Schalk Jacob Ruppert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:47
CPC Classifications
B; B63; B63B; B63B17/00; B63B17/04; Y; Y10; Y10T; Y10T292/00; Y10T292/42; Y10T292/432; Y10T403/00; Y10T403/59; Y10T403/599
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) | 1934-05-11 | 1934-11-10 | 1935-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-05-11 | 1938-11-10 | 1939-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-05-11 | 1942-11-10 | 1943-05-12 | $7700.00 | Window Closed / Lapsed |