Patent US2267644A successfully refreshed from Google Patents.
US2267644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic machine circuit
Assignee: HYDRAULIC PRESS CORP Inc
•
Filing: 1937-07-01
•
Granted: 1941-12-23
•
Expires: 1957-07-01
Abstract
No abstract record available.
Inventors
- 👤 Ernst Walter
- 👤 Warren R Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:30
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; F15B11/17; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/20538; F15B2211/20546; F15B2211/20576; F15B2211/20592; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/415; F15B2211/41527; F15B2211/41536; F15B2211/42; F15B2211/428; F15B2211/70; F15B2211/71; F15B2211/7142
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-12-22 | 1945-06-23 | 1945-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-22 | 1949-06-23 | 1949-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-22 | 1953-06-23 | 1953-12-23 | $7700.00 | Window Closed / Lapsed |