Patent US2476511A successfully refreshed from Google Patents.
US2476511A
Expired / Lapsed
US
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Tractor hitch
Assignee: Individual
•
Filing: 1948-04-22
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Granted: 1949-07-19
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Expires: 1968-04-22
Abstract
No abstract record available.
Inventors
- 👤 Ruth Lawrence Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:33
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/02; B60D1/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US80688A
Cited
US130585A
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US160162A
Cited
US275880A
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US372979A
Cited
US472505A
Cited
US1649980A
Cited
US2140132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |