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Patent US2477204A successfully refreshed from Google Patents.
US2477204A
Expired / Lapsed
US
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Soil aerator
Assignee: Individual
•
Filing: 1945-11-26
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Granted: 1949-07-26
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Expires: 1965-11-26
Abstract
No abstract record available.
Inventors
- 👤 Marion D Ravine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:41
CPC Classifications
A; A01; A01G; A01G29/00; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB125809A
Cited
US1334911A
Cited
US1650081A
Cited
GB428103A
Cited
GB468687A
Cited
US2120620A
Cited
US2247311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |