Patent US2450299A successfully refreshed from Google Patents.
US2450299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable molding sand muller, including suspendable power-driven muller unit and underlying portable bowl receptacle
Assignee: Pettibone Traverse Lift LLC
•
Filing: 1944-04-24
•
Granted: 1948-09-28
•
Expires: 1964-04-24
Abstract
No abstract record available.
Inventors
- 👤 Walter F Piper
- 👤 Joseph J Soldat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:43
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0422; B22C5/0427
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US348931A
Cited
US529617A
Cited
US646484A
Cited
US856295A
Cited
US1115591A
Cited
US1144160A
Cited
US1673927A
Cited
US1933278A
Cited
US2203672A
Cited
US2318797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-28 | 1952-03-29 | 1952-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-28 | 1956-03-29 | 1956-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-28 | 1960-03-29 | 1960-09-28 | $7700.00 | Window Closed / Lapsed |