US2640480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction apparatus
Assignee: Individual
•
Filing: 1949-05-14
•
Granted: 1953-06-02
•
Expires: 1969-05-14
Abstract
No abstract record available.
Inventors
- 👤 Hill Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:40
CPC Classifications
A; A61; A61H; A61H1/00; A61H1/02; A61H1/0218; A61H1/0222; A61H2201/00; A61H2201/16; A61H2201/1602; A61H2201/1604; A61H2201/1607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US764687A
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US762832A
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US761504A
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US923862A
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US1915841A
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US2088747A
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US2166229A
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US2243013A
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US2230057A
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US2266628A
Cited
US2377940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |