US2834977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scraper blade assembly for the interior side wall of a grease kettle
Assignee: Stratford Engineering Corp
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Filing: 1955-07-11
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Granted: 1958-05-20
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/05; B01F27/09; B01F27/091; B01F27/80; B01F27/82
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |