Patent US3018136A successfully refreshed from Google Patents.
US3018136A
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Adjustable differential air pressure relay
Assignee: POWER BRAKE EQUIPMENT CO
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Filing: 1960-03-21
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Granted: 1962-01-23
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Norman C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:43
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/58; B60T13/62; B60T13/24; B60T13/26; B60T13/40; B60T13/403; B60T15/00; B60T15/02; B60T15/18; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/8593; Y10T137/86919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |