Patent US3333777A successfully refreshed from Google Patents.
US3333777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding mill
Assignee: HIGFILL
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Filing: 1965-04-19
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Granted: 1967-08-01
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Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Clyde W Highfill
- 👤 Jr Tom J Self
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:46
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
A GRINDING MILL COMPRISING: (A) A FRAME; (B) A HAMMER CHAMBER ON SAID FRAME; (C) MEANS FOR INTRODUCING MATERIAL INTO SAID HAMMER CHAMBER; (D) ROTATABLE HAMMERS IN SAID CHAMBER AND ROTATABLY MOUNTED ON SAID FRAME, SAID HAMMERS BEING ARRANGED TO STRIKE THE MATERIAL INTRODUCED IN SAID CHAMBER; (E) BLOWER MEANS FOR DELIVERING AIR INTO SAID CHAMBER THROUGH OPENINGS IN THE WALLS THEREOF;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |