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Patent US2860651A successfully refreshed from Google Patents.
US2860651A
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Apparatus for controlling the emptying of tanks
Assignee: Parker Hannifin Corp
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Filing: 1955-01-24
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Granted: 1958-11-18
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Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Robert H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
G; G05; G05D; G05D9/00; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/20; Y; Y02; Y02T; Y02T50/00; Y02T50/40; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |