Patent US3366758A successfully refreshed from Google Patents.
US3366758A
Expired / Lapsed
US
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Differential pressure signal device
Assignee: Holley Performance Products Inc
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Filing: 1965-05-18
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Granted: 1968-01-30
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Expires: 1985-05-18
Abstract
No abstract record available.
Inventors
- 👤 Donald W Bentzen
- 👤 Donald J West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:28
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/38; B; B01; B01D; B01D35/00; B01D35/14; B01D35/143; H01H35/247; Y; Y10; Y10S; Y10S116/00; Y10S116/42
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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |