US2486690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic unit
Assignee: Individual
•
Filing: 1945-01-18
•
Granted: 1949-11-01
•
Expires: 1965-01-18
Abstract
No abstract record available.
Inventors
- 👤 Tipton Elizabeth Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:47
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/10; F01B3/103; F01B3/106; F01B3/0032; F01B3/0044; F01B3/0052; F01B3/0082; F01B3/0085; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1794575A
Cited
US1924738A
Cited
US2129828A
Cited
US2303955A
Cited
US2299233A
Cited
US2299235A
Cited
GB500937A
Cited
US2229715A
Cited
US2292125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-31 | 1953-05-02 | 1953-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-31 | 1957-05-02 | 1957-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-31 | 1961-05-02 | 1961-11-01 | $7700.00 | Window Closed / Lapsed |