US2708142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift disengager
Assignee: Houdry Process Corp
•
Filing: 1951-02-14
•
Granted: 1955-05-10
•
Expires: 1971-02-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:40
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/005; B01J8/0065; B01J8/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US412388A
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US444884A
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DE455139C
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US641045A
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US824585A
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US1044181A
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US1080399A
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US1114318A
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US2429751A
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US2493911A
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US2541077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |