US1254784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston for hydraulic pumps.
Assignee: Individual
•
Filing: 1917-10-12
•
Granted: 1918-01-29
•
Expires: 1937-10-12
Abstract
No abstract record available.
Inventors
- 👤 Robert Esnault-Pelterie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:43
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/001; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1616; Y10T403/1624
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) | 1921-01-28 | 1921-07-30 | 1922-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-01-28 | 1925-07-30 | 1926-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-01-28 | 1929-07-30 | 1930-01-29 | $7700.00 | Window Closed / Lapsed |