Patent US2821346A successfully refreshed from Google Patents.
US2821346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector for impact pulverizer or the like
Assignee: MAJAC Inc
•
Filing: 1953-04-23
•
Granted: 1958-01-28
•
Expires: 1973-04-23
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:30
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/06; B02C19/065; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US250999A
Cited
US424638A
Cited
US992144A
Cited
US1833341A
Cited
US2119887A
Cited
US2310265A
Cited
US2387548A
Cited
US2376616A
Cited
US2543517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |