Patent US4747458A successfully refreshed from Google Patents.
Patent US1291869A successfully refreshed from Google Patents.
US1291869A
Expired / Lapsed
US
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Gas-tight joint.
Assignee: Compteurs Schlumberger SA
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Filing: 1914-02-21
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Granted: 1919-01-21
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Expires: 1934-02-21
Abstract
No abstract record available.
Inventors
- 👤 George Heeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:39
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/50; F16J15/52; F16J15/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1922-01-20 | 1922-07-22 | 1923-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-01-20 | 1926-07-22 | 1927-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-01-20 | 1930-07-22 | 1931-01-21 | $7700.00 | Window Closed / Lapsed |