Patent US3109857A successfully refreshed from Google Patents.
Patent US2698517A successfully refreshed from Google Patents.
US2698517A
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Automatic means to control and reverse fluid-operated cylinder-and-piston units
Assignee: Individual
•
Filing: 1952-05-21
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Granted: 1955-01-04
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Expires: 1972-05-21
Abstract
No abstract record available.
Inventors
- 👤 Kenneth F Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:17
CPC Classifications
F; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F03; F03C; F03C1/00; F03C1/007; F15; F15B; F15B11/00; F15B11/16; F15B2211/00; F15B2211/30; F15B2211/32; F15B2211/329; F15B2211/60; F15B2211/605; F15B2211/6051; F15B2211/6055; F15B2211/635; F15B2211/6355; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/77; F15B2211/7725; F15B2211/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1938758A
Cited
US1952690A
Cited
US2223792A
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US2287709A
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US2342450A
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US2617257A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |