Patent US4761386A successfully refreshed from Google Patents.
US3497243A
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US
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Pipe suspension apparatus
Assignee: Cooper Industries LLC
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Filing: 1966-01-05
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Granted: 1970-02-24
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Expires: 1986-01-05
Abstract
No abstract record available.
Inventors
- 👤 David L Gruller
- 👤 Leonard E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:33
CPC Classifications
F; F16; F16L; F16L39/00; F16L39/005; E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; F16L7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2699589A
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US2607422A
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US2784627A
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US3090640A
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US3179448A
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US3334923A
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US3298699A
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US3335799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |