US3207044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder tube cylinder
Assignee: Individual
•
Filing: 1963-05-20
•
Granted: 1965-09-21
•
Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:40
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1457; E; E21; E21B; E21B19/00; E21B19/08; E21B19/087; F15B15/1466; F15B15/149
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A DOUBLE ACTING FLUID PRESSURE CYLINDER AND PISTON UNIT HAVING A PISTON ROD WITH FLUID PASSAGEWAY THEREIN, A REVERSIBLE FLUID PRESSURE OPERATED UNIT HAVING INLET AND OUTLET CONNECTIONS WITH SAID PISTON ROD, AND MEANS IN SAID CYLINDER AND PISTON ROD TO OPERATE BOTH OF SAID UNITS INDIVIDUALLY FROM EXTERNAL SUPPLY CONNECTIONS WITH SAID CYLINDER.
Claim 2
Dependent Claim
54 words
A DOUBLE ACTING FLUID PRESSURE CYLINDER AND PISTON UNIT HAVING A PISTON ROD WITH FLUID PASSAGEWAY THEREIN, A REVERSIBLE FLUID PRESSURE OPERATED UNIT HAVING INLET AND OUTLET CONNECTIONS WITH SAID PISTON ROD, AND MEANS IN SAID CYLINDER AND PISTON ROD TO OPERATE BOTH OF SAID UNITS INDIVIDUALLY FROM EXTERNAL SUPPLY CONNECTIONS WITH SAID CYLINDER.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |