Patent US2620823A successfully refreshed from Google Patents.
US2620823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracer valve mechanism with dashpot
Assignee: Milacron Inc
•
Filing: 1947-07-08
•
Granted: 1952-12-09
•
Expires: 1967-07-08
Abstract
No abstract record available.
Inventors
- 👤 Robert R Adams
- 👤 Raymond D Wortendyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:02
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1560439A
Cited
US1285521A
Cited
US1453733A
Cited
US1347017A
Cited
US1950685A
Cited
US2068889A
Cited
US2403321A
Cited
US2412549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |