US2115383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic brake
Assignee: Individual
•
Filing: 1933-12-29
•
Granted: 1938-04-26
•
Expires: 1953-12-29
Abstract
No abstract record available.
Inventors
- 👤 Niels A Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/025; B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22; B60T11/236; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S277/00; Y10S277/91
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) | 1941-04-25 | 1941-10-25 | 1942-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-04-25 | 1945-10-25 | 1946-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-04-25 | 1949-10-25 | 1950-04-26 | $7700.00 | Window Closed / Lapsed |