Patent US3057301A successfully refreshed from Google Patents.
US3057301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic reciprocating pump apparatus
Assignee: Carding Specialists Canada Ltd
•
Filing: 1960-12-13
•
Granted: 1962-10-09
•
Expires: 1980-12-13
Abstract
No abstract record available.
Inventors
- 👤 Varga John Maximilian Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:07
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/0042; F04B7/0053; F04B1/00; F04B1/04; F04B1/0404; F04B1/0439
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE254111C
Cited
US1781416A
Cited
GB357139A
Cited
US2001336A
Cited
GB363167A
Cited
US2006879A
Cited
US2518870A
Cited
US2727466A
Cited
US2952219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |