Patent US3385168A successfully refreshed from Google Patents.
US3385168A
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Differential pressure operated boosters
Assignee: Girling Ltd
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Filing: 1966-03-28
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Granted: 1968-05-28
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Fineman Harold
- 👤 Thomas G Lawson
- 👤 Reginald M Bowmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:16
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/573; B60T13/569; F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE457925C
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US2894490A
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US2900962A
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US2949892A
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US3033173A
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US3013792A
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US3072106A
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US3183789A
Cited
US3298285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |