US2937893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resealable conduit coupling with abutting resilient flange surfaces
Assignee: Midland Ross Corp
•
Filing: 1956-06-01
•
Granted: 1960-05-24
•
Expires: 1976-06-01
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Hill
- 👤 Richard G Schumann
- 👤 John R Denise
- 👤 Jr Maurice S Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:13
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/04; F16L23/08; F16L23/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1097798A
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GB284776A
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US1857297A
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US1935673A
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US2136036A
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US2329369A
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US2519847A
Cited
US2674471A
Cited
US2717788A
Cited
US2689141A
Cited
US2781205A
Cited
US2761707A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |