US2847827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic compensating master cylinder
Assignee: Thew Shovel Co
•
Filing: 1954-09-13
•
Granted: 1958-08-19
•
Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Johnson Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:06
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/06; F15B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR812483A
Cited
US2152499A
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US2163874A
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US2211652A
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US2374235A
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US2541312A
Cited
US2561009A
Cited
GB636933A
Cited
US2638748A
Cited
US2649692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |