US2471619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pressure transmitter
Assignee: Individual
•
Filing: 1943-03-22
•
Granted: 1949-05-31
•
Expires: 1963-03-22
Abstract
No abstract record available.
Inventors
- 👤 Gordon W Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/005; F15B7/06; F15B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US616756A
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US1457156A
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US1937485A
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US2014195A
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US2204649A
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US2305302A
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US2287960A
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US2334383A
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US2360539A
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US2344473A
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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) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |