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Patent US3476540A successfully refreshed from Google Patents.
US3476540A
Expired / Lapsed
US
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Method of bending glass sheets
Assignee: Pilkington North America Inc
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Filing: 1966-08-22
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Granted: 1969-11-04
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Expires: 1986-08-22
Abstract
No abstract record available.
Inventors
- 👤 George F Ritter Jr
- 👤 Frank J Carson
- 👤 Frank J Hymore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:29
CPC Classifications
C; C03; C03B; C03B27/00; C03B27/04; C03B27/0404; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/0256; C03B27/0417; C03B27/044; C03B27/0442; C03B2225/00; C03B2225/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3265484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |