US2705653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for chambers of rubber mixers or the like
Assignee: Farrel Birmingham Co Inc
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Filing: 1951-03-12
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Granted: 1955-04-05
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Expires: 1971-03-12
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Macleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:20
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/02; B29B7/06; B29B7/10; B29B7/18; B29B7/183; B29B7/22; B29B7/74; B29B7/7476; B29B7/7495; F; F16; F16J; F16J15/00; F16J15/002; F16J15/44; F16J15/441; B01; B01F; B01F35/00; B01F35/30; B01F2035/35; B01F2035/351; B01F2035/3513
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-04-04 | 1958-10-04 | 1959-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-04-04 | 1962-10-04 | 1963-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-04-04 | 1966-10-04 | 1967-04-05 | $7700.00 | Window Closed / Lapsed |