US3020776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum refrence control for pressure compensation
Assignee: Borg Warner Corp
•
Filing: 1960-05-25
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Granted: 1962-02-13
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Expires: 1980-05-25
Abstract
No abstract record available.
Inventors
- 👤 Charles W May
- 👤 Robert W Halberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:08
CPC Classifications
F; F16; F16H; F16H59/00; F16H59/14; F16H59/26; F16H59/30; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16; F02; F02D; F02D1/00; F02D1/02; F02D1/06; F02D1/065; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284; F02D2700/0287; Y; Y10; Y10S; Y10S74/00; Y10S74/01; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21828E
Cited
US2233035A
Cited
US2209321A
Cited
US2214766A
Cited
US2771788A
Cited
US2837932A
Cited
US2922314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |