US2789844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed joint for flanged pipe with opposed packing grooves
Assignee: ATI Ladish Co Inc
•
Filing: 1952-10-20
•
Granted: 1957-04-23
•
Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph S Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:30
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/18; F16L23/22; F16L23/04; F16L23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US261086A
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US508765A
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US1071235A
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US1290590A
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FR584100A
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US2330425A
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US2455982A
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DE814977C
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US2688500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |