US3178935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure measuring device
Assignee: REFRACTORIES INST
•
Filing: 1963-03-20
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Granted: 1965-04-20
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Expires: 1983-03-20
Abstract
No abstract record available.
Inventors
- 👤 Frank H Mcritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:23
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/30; G01L; G01L1/00; G01L1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A DISK-LIKE PRESSURE MEASURING DEVICE ADAPTED FOR TOTAL INTRODUCTION INTO A CHAMBER COMPRISING: A RING HAVING AN OUTER CIRCUMFERENCE AND AN INNER BORE; A BASE PLATE COMPRISING A FLAT DISK HAVING THREE PROTUBERANCES SECURED TO AN INNER FLAT SURFACE THEREOF IN A TRIANGULAR ARRAY; A CALIBRATED PLATE COMPRISING A FLAT DISK HAVING A POLISHED INTERIOR SURFACE;
Claim 2
Dependent Claim
56 words
A DISK-LIKE PRESSURE MEASURING DEVICE ADAPTED FOR TOTAL INTRODUCTION INTO A CHAMBER COMPRISING: A RING HAVING AN OUTER CIRCUMFERENCE AND AN INNER BORE; A BASE PLATE COMPRISING A FLAT DISK HAVING THREE PROTUBERANCES SECURED TO AN INNER FLAT SURFACE THEREOF IN A TRIANGULAR ARRAY; A CALIBRATED PLATE COMPRISING A FLAT DISK HAVING A POLISHED INTERIOR SURFACE;
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |