Patent US3412706A successfully refreshed from Google Patents.
US3412706A
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Differential pressure indicator
Assignee: Bowser Inc
•
Filing: 1965-04-09
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Granted: 1968-11-26
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Expires: 1985-04-09
Abstract
No abstract record available.
Inventors
- 👤 George J Topol
- 👤 Barry A Hinkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:48
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/007
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |