US2581224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive construction
Assignee: Old Carco LLC
•
Filing: 1945-09-13
•
Granted: 1952-01-01
•
Expires: 1965-09-13
Abstract
No abstract record available.
Inventors
- 👤 David A Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:08
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/02; B63H23/08; F; F16; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/06; F16H1/12; F16H1/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19372
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1693590A
Cited
DE366985C
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US4158A
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DE405557C
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GB190526657A
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FR372265A
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US1181717A
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US1273873A
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US1444343A
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US1548917A
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US1653262A
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US1814311A
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US1728279A
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US1772158A
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US1954200A
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US1846250A
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FR734699A
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GB386130A
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US1903350A
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US2130125A
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US2164487A
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US2423886A
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US2436746A
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US2437314A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |