US2438649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound master cylinder
Assignee: Individual
•
Filing: 1942-03-17
•
Granted: 1948-03-30
•
Expires: 1962-03-17
Abstract
No abstract record available.
Inventors
- 👤 Albert E Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:23
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/224
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1770064A
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US2111310A
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US2190238A
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FR812483A
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US2101772A
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US2217461A
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US2166742A
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US2272316A
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US2214966A
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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) | 1951-03-30 | 1951-09-29 | 1952-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-30 | 1955-09-29 | 1956-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-30 | 1959-09-29 | 1960-03-30 | $7700.00 | Window Closed / Lapsed |