US3348256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crenelated polishing pad
Assignee: Bacon Felt Co Inc
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Filing: 1965-05-25
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Granted: 1967-10-24
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 William E Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:45
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
IN COMBINATION: A CIRCULAR GLASS POLISHING BLOCK; A COMPOSITE POLISHING PAD, OF FELT SUBSTANTIALLY GREATER THAN ONE INCH IN THICKNESS, COVERING THE POLISHING FACE OF SAID BLOCK; A FELT RING ENCIRCLING SAID PAD, SAID RING HAVING A PREFORMED, UPSTANDING INTERRUPTED, SELF SUPPORTING, INTEGRAL RIM-LIKE FLANGE OF SAID FLET, SAID INTERRUPTED FELT FLANGE EXTENDING AROUND THE PERIPHERAL WALL OF SAID BLOCK TO FORM SPACED ATTACHMENT TABS OF FELT; REINFORCING MEANS FOR UNITIZING THE FELT OF SAID RING, TABS AND PAD, AND A LOCKING RING ENCIRCLING SAID FELT ATTACHMENT TABS ON SAID BLOCK FOR FIRMLY SECURING SAID PAD THEREON.
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |