Patent US3087557A successfully refreshed from Google Patents.
US3087557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth cutter assembly
Assignee: Individual
•
Filing: 1960-03-11
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Granted: 1963-04-30
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Expires: 1980-03-11
Abstract
No abstract record available.
Inventors
- 👤 Gail A Hohstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:39
CPC Classifications
A; A01; A01B; A01B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN AN EARTH CUTTER ASSEMBLY FOR A CORRUGATOR FOR FORMING TRENCHES FOR IRRIGATION, SAID CUTTER ASSEMBLY INCLUDING A HUB AND A DISC-LIKE WEB PROJECTING FROM THE HUB, SAID DISC-LIKE WEB INCLUDING FIRST SPACED FLAT BLADE MOUNTING PORTIONS ALTERNATELY PROJECTING LATERALLY FROM A PLANE THROUGH THE CENTER OF THE HUB WHICH IS NORMAL TO THE AXIS OF THE HUB, AND FLAT BLADE MOUNTING PORTIONS CONNECTING THE ADJACENT EDGES OF THE SPACED FLAT BLADE
Claim 2
Dependent Claim
72 words
IN AN EARTH CUTTER ASSEMBLY FOR A CORRUGATOR FOR FORMING TRENCHES FOR IRRIGATION, SAID CUTTER ASSEMBLY INCLUDING A HUB AND A DISC-LIKE WEB PROJECTING FROM THE HUB, SAID DISC-LIKE WEB INCLUDING FIRST SPACED FLAT BLADE MOUNTING PORTIONS ALTERNATELY PROJECTING LATERALLY FROM A PLANE THROUGH THE CENTER OF THE HUB WHICH IS NORMAL TO THE AXIS OF THE HUB, AND FLAT BLADE MOUNTING PORTIONS CONNECTING THE ADJACENT EDGES OF THE SPACED FLAT BLADE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |