US3049307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining discs with enlarged grooves
Assignee: E D JONES CORP
•
Filing: 1959-10-22
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Granted: 1962-08-14
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Expires: 1979-10-22
Abstract
No abstract record available.
Inventors
- 👤 Jr David R Dalzell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/30
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) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |