US2918905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closure for rubber mixers or the like
Assignee: Farrel Birmingham Co Inc
•
Filing: 1956-11-21
•
Granted: 1959-12-29
•
Expires: 1976-11-21
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Macleod
- 👤 Henry V Selbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:20
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/02; B29B7/22; B29B7/26; B29B7/263; B29B7/266; B29B7/06; B29B7/10; B29B7/18; B29B7/183; B29B7/74; B29B7/7476; B29B7/7495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1726272A
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US1852507A
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US1891312A
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US2548708A
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GB610945A
Cited
US2594494A
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US2699102A
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US2688825A
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US2755779A
Cited
US2725220A
Cited
US2778343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |