US2956818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe coupling for remote operation
Assignee: Chemetron Corp
•
Filing: 1956-12-20
•
Granted: 1960-10-18
•
Expires: 1976-12-20
Abstract
No abstract record available.
Inventors
- 👤 John L Dickerson
- 👤 Mccutchan Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/002; Y; Y10; Y10S; Y10S285/00; Y10S285/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1376216A
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US1681381A
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US1802015A
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US2324538A
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US2353572A
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US2433289A
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US2485834A
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US2635900A
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US2699343A
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US2766829A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |