Patent US3490122A successfully refreshed from Google Patents.
US3490122A
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US
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Method of making an in-line pipe connection
Assignee: 3M Co
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Filing: 1967-10-04
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Granted: 1970-01-20
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Expires: 1987-10-04
Abstract
No abstract record available.
Inventors
- 👤 David N Hunder
- 👤 Richard G Eikos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:24
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/02; F16L13/00; F16L13/10; F16L13/11; F16L41/04; F16L41/06; F16L55/00; F16L55/16; F16L55/168; F16L55/17; F16L55/171; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0441; Y10T137/0447; Y10T29/00; Y10T29/49; Y10T29/49403; Y10T29/49826; Y10T29/49879; Y10T29/49888; Y10T29/49893; Y10T29/4998; Y10T403/00; Y10T403/57; Y10T403/5793
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US647996A
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US875729A
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US873689A
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US978346A
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US924262A
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US2128720A
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US2180695A
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US3070874A
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US3177528A
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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) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |