Patent US6434534B1 successfully refreshed from Google Patents.
US3490686A
Expired / Lapsed
US
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Assignee: Wallace Murray Corp
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Filing: 1968-03-14
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Granted: 1970-01-20
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Expires: 1988-03-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:47
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/04; F01P7/042; F04; F04D; F04D25/00; F04D25/02; F04D25/022; F16; F16D; F16D35/00; F16D35/02; F16D35/021; F16D35/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2890687A
Cited
US3059745A
Cited
US3149465A
Cited
US3363734A
Cited
US3339689A
Cited
US3373930A
Cited
US3356154A
Cited
US3404832A
Cited
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 |