Patent US2542940A successfully refreshed from Google Patents.
US2542940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring manufacture
Assignee: Ford Motor Co
•
Filing: 1946-07-19
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Granted: 1951-02-20
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Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 William F Pioch
- 👤 Pascoe George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:29
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB258633A
Cited
US67788A
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US134264A
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US357228A
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US390206A
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US661459A
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US1061721A
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US1489894A
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US1362708A
Cited
US1381014A
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US1500571A
Cited
US2445150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |