US2846864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency brake lock
Assignee: Individual
•
Filing: 1955-08-16
•
Granted: 1958-08-12
•
Expires: 1975-08-16
Abstract
No abstract record available.
Inventors
- 👤 Bill T Polston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:05
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/02; B60T7/08; B60T7/10; B60T7/101; G; G05; G05G; G05G5/00; G05G5/12; G05G5/20; G05G5/24; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/50; Y10T70/5611; Y10T70/5642
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US327575A
Cited
US1421059A
Cited
US830411A
Cited
US931685A
Cited
US1025180A
Cited
US1017955A
Cited
US2709356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |