US3436865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge form grinding
Assignee: Corning Glass Works
•
Filing: 1966-10-05
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Granted: 1969-04-08
•
Expires: 1986-10-05
Abstract
No abstract record available.
Inventors
- 👤 Bela O Kalocsai
- 👤 Robert F Wrench
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:24
CPC Classifications
B; B24; B24B; B24B9/00; B24B9/02; B24B9/06; B24B9/08; B24B9/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US189505A
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US386738A
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US428195A
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US635753A
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US1491079A
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US1881244A
Cited
FR685863A
Cited
CH247788A
Cited
US3024575A
Cited
US3186134A
Cited
US3160994A
Cited
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 |