Patent US3201904A successfully refreshed from Google Patents.
US3201904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for finishing glass surfaces
Assignee: Corning Glass Works
•
Filing: 1961-11-09
•
Granted: 1965-08-24
•
Expires: 1981-11-09
Abstract
No abstract record available.
Inventors
- 👤 James W Evans
- 👤 Karl E Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:37
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/14; B24D13/142; B24D13/18; Y; Y10; Y10S; Y10S451/00; Y10S451/921
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
IN A DISC FOR FINISHING A CONVEX SURFACE OF A GLASS ARTICLE, A RADIALLY AND PERIPHERALLY FLEXIBLE CONCAVE FINISHING UNIT COMPRISING A BACKING OF AT LEAST ONE LAYER OF CLOTH AND AT LEAST ONE LAYER OF RUBBER-LIKE MATERIAL, MEANS FOR RIGIDLY SUPPORTNG SAID BACKING AT ITS CENTRAL PORTION AND ABOUT ITS PERIPHERY, RESILIENT MEANS FOR CUSHIONING SAID BACKING INTERMEDIATE SAID CENTRAL PORTION AND SAID PERIPHERY, GLASS ARTICLE FINISHING ELEMENTS ATTACHED TO SAID BACKING, AND MEANS FOR FLOWING AN ABRASIVE SLURRY BETWEEN SAID BACKING AND THE SURFACE OF SAID ARTICLE.
References Cited (Backward Citations)
US1332896A
Cited
US1508396A
Cited
US2001911A
Cited
US2291123A
Cited
US2174902A
Cited
US2292261A
Cited
US2414474A
Cited
US2431258A
Cited
US2479204A
Cited
US2787100A
Cited
US2707856A
Cited
US2757491A
Cited
US2804733A
Cited
US3013366A
Cited
US2997816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |