US3535937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe pressure measuring apparatus
Assignee: Newport News Shipbuilding and Dry Dock Co
•
Filing: 1968-12-31
•
Granted: 1970-10-27
•
Expires: 1988-12-31
Abstract
No abstract record available.
Inventors
- 👤 Benjamin B Wiggins
- 👤 James P Bailey
- 👤 William M Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1999771A
Cited
US2419061A
Cited
US2568940A
Cited
US2826062A
Cited
US2880409A
Cited
US3102427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |