US2993568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic trailer brake and coupling apparatus
Assignee: Individual
•
Filing: 1958-09-08
•
Granted: 1961-07-25
•
Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Henry Howarth Padgett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:38
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/107; B60T8/00; B60T8/18; B60T8/1806; B60T8/1812; B60T8/1887
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2001630A
Cited
US2066893A
Cited
US2698069A
Cited
US2746574A
Cited
US2834436A
Cited
US2848074A
Cited
US2846030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |