US3537122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polishing pad
Assignee: JOHN R PROFFITT JR
•
Filing: 1968-09-06
•
Granted: 1970-11-03
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Expires: 1988-09-06
Abstract
No abstract record available.
Inventors
- 👤 John R Proffitt Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164; A47L11/4052; A47L11/4058; B; B24; B24D; B24D13/00; B24D13/14; B24D13/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB355999A
Cited
US1998244A
Cited
US2379997A
Cited
FR1046478A
Cited
US3007189A
Cited
US3084364A
Cited
US3413674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |