US3437543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for polishing
Assignee: AT&T Inc
•
Filing: 1965-03-09
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Granted: 1969-04-08
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Expires: 1985-03-09
Abstract
No abstract record available.
Inventors
- 👤 Richard H Winings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:04
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; C; C23; C23F; C23F1/00; C23F1/08
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |