US2821173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work implement position control hydraulic system
Assignee: Individual
•
Filing: 1955-01-21
•
Granted: 1958-01-28
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Expires: 1975-01-21
Abstract
No abstract record available.
Inventors
- 👤 Adsit Thomas Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/08; F15B11/12; F15B11/121; F15B11/126; A; A01; A01B; A01B63/00; A01B63/14; A01B63/16; A01B63/22; A01B63/24; A01B63/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US752491A
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US897907A
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US2172315A
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DE702983C
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US2448465A
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US2631795A
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US2506093A
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US2524055A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |