Patent US2755668A successfully refreshed from Google Patents.
US2755668A
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US
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Square law response differential pressure device
Assignee: Honeywell Inc
•
Filing: 1950-09-28
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Granted: 1956-07-24
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Expires: 1970-09-28
Abstract
No abstract record available.
Inventors
- 👤 Robert V Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:20
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/34; G01F1/36; G01F1/38; G01F1/386; G06; G06G; G06G5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |