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Patent US2470531A successfully refreshed from Google Patents.
US2470531A
Expired / Lapsed
US
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Wagon tongue hitch
Assignee: Individual
•
Filing: 1946-10-02
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Granted: 1949-05-17
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Expires: 1966-10-02
Abstract
No abstract record available.
Inventors
- 👤 Suhl Richard Warren
- 👤 Elmer C Marxmiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:16
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)
DE438659C
Cited
US854196A
Cited
US870177A
Cited
US1448950A
Cited
US1692071A
Cited
US2155782A
Cited
DE688160C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |