US2136835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic brake system
Assignee: Midland Steel Products Co
•
Filing: 1935-03-21
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Granted: 1938-11-15
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Expires: 1955-03-21
Abstract
No abstract record available.
Inventors
- 👤 Russell S Begg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22; Y; Y10; Y10S; Y10S137/00; Y10S137/902; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2937; Y10T137/2947
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) | 1941-11-14 | 1942-05-16 | 1942-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-14 | 1946-05-16 | 1946-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-14 | 1950-05-16 | 1950-11-15 | $7700.00 | Window Closed / Lapsed |