US2984985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic operating and control system
Assignee: MACMILLIN HYDRAULIC ENGINEERIN
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Filing: 1959-02-16
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Granted: 1961-05-23
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Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 Norman F Macmillin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:39
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/184; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30515; F15B2211/3056; F15B2211/30585; F15B2211/3059; F15B2211/30595; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/329; F15B2211/60; F15B2211/635; F15B2211/6355; F15B2211/70; F15B2211/71; F15B2211/7135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |