Patent US4333490A successfully refreshed from Google Patents.
Patent US3208607A successfully refreshed from Google Patents.
US3208607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knives for storage bins
Assignee: Individual
•
Filing: 1963-08-15
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Granted: 1965-09-28
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Expires: 1983-08-15
Abstract
No abstract record available.
Inventors
- 👤 Norbert W Weissmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5109; Y10T29/5113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A STORAGE BIN HAVING A SIDE OPENING THROUGH WHICH AN UNLOADER EXTENDS INTO THE BIN, A PAIR OF BLADES SECURED TO THE SIDE OF SAID BIN, SAID BLADES BEING SPACED VERTICALLY ABOVE THE TOP OF SAID UNLOADER AND HAVING UPWARD FACING EDGES, ONE OF SAID BLADES PROJECTING INTO SAID BIN FROM EACH SIDE OF SAID OPENING TO CUT STORED MATERIAL AS IT MOVES DOWNWARD IN SAID BIN TOWARD SAID UNLOADER.
Claim 2
Dependent Claim
71 words
IN A STORAGE BIN HAVING A SIDE OPENING THROUGH WHICH AN UNLOADER EXTENDS INTO THE BIN, A PAIR OF BLADES SECURED TO THE SIDE OF SAID BIN, SAID BLADES BEING SPACED VERTICALLY ABOVE THE TOP OF SAID UNLOADER AND HAVING UPWARD FACING EDGES, ONE OF SAID BLADES PROJECTING INTO SAID BIN FROM EACH SIDE OF SAID OPENING TO CUT STORED MATERIAL AS IT MOVES DOWNWARD IN SAID BIN TOWARD SAID UNLOADER.
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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |