US3038313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined air and hydraulic piston and cylinder devices
Assignee: Individual
•
Filing: 1959-04-21
•
Granted: 1962-06-12
•
Expires: 1979-04-21
Abstract
No abstract record available.
Inventors
- 👤 Trythall William John Courtney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:15
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/032; B; B30; B30B; B30B15/00; B30B15/16; B30B15/165; F15B3/00; F15B2211/00; F15B2211/20; F15B2211/21; F15B2211/216; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053
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) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |