US2866658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for adjusting the length of a valve stem
Assignee: LUDLOW VALVE MANUFACTURING Co Inc
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Filing: 1955-12-29
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Granted: 1958-12-30
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Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 Richard A Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:19
CPC Classifications
E; E03; E03B; E03B9/00; E03B9/02; E03B9/04; F; F16; F16K; F16K1/00; F16K1/32; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
Claims Analysis
Total Claims: 0
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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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |