Patent US5385030A successfully refreshed from Google Patents.
Patent US2958476A successfully refreshed from Google Patents.
Patent US2729943A successfully refreshed from Google Patents.
US2729943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-pressure-actuated apparatus
Assignee: Chambersburg Engineering Co
•
Filing: 1953-05-26
•
Granted: 1956-01-10
•
Expires: 1973-05-26
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Clarke
- 👤 Henry A Weyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:07
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/22; B; B21; B21J; B21J7/00; B21J7/20; B21J7/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |