Patent US2689138A successfully refreshed from Google Patents.
US2689138A
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US
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Coupling
Assignee: Individual
•
Filing: 1949-06-18
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Granted: 1954-09-14
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Expires: 1969-06-18
Abstract
No abstract record available.
Inventors
- 👤 Albert T Scheiwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:03
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/22; F16L37/23; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US137823A
Cited
FR701656A
Cited
US2083591A
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US2307427A
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US2398170A
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US2428637A
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US2428638A
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US2461700A
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US2536428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |