Patent US2251982A successfully refreshed from Google Patents.
Patent US2554071A successfully refreshed from Google Patents.
US2554071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulverizer having a two-part housing
Assignee: Jeffrey Manufacturing Co
•
Filing: 1949-07-09
•
Granted: 1951-05-22
•
Expires: 1969-07-09
Abstract
No abstract record available.
Inventors
- 👤 Orval R Strawn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:37
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/282
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE450482C
Cited
US507140A
Cited
US750701A
Cited
US426946A
Cited
US787290A
Cited
US829792A
Cited
US891471A
Cited
FR402035A
Cited
US1033878A
Cited
US1286831A
Cited
US1729672A
Cited
US1902721A
Cited
US2105764A
Cited
US2450492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |