US2691933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil pulverizer
Assignee: Individual
•
Filing: 1950-04-01
•
Granted: 1954-10-19
•
Expires: 1970-04-01
Abstract
No abstract record available.
Inventors
- 👤 Carl A Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/02; A01B33/021; A01B33/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US570828A
Cited
US674658A
Cited
US1635612A
Cited
US1805865A
Cited
US2046046A
Cited
US2503993A
Cited
US2574772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |