Patent US2553129A successfully refreshed from Google Patents.
US2553129A
Expired / Lapsed
US
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Electrical valve seat gauge
Assignee: RTX Corp
•
Filing: 1944-06-09
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Granted: 1951-05-15
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Expires: 1964-06-09
Abstract
No abstract record available.
Inventors
- 👤 Henry J Burnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:20
CPC Classifications
F; F02; F02B; F02B77/00; G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189523439A
Cited
US1766991A
Cited
US1952965A
Cited
US2074753A
Cited
US2232360A
Cited
GB544695A
Cited
US2332983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |