Patent US3532478A successfully refreshed from Google Patents.
US3532478A
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US
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Method and apparatus for forming and winding glass strand
Assignee: PPG Industries Inc
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Filing: 1969-09-29
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Granted: 1970-10-06
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Expires: 1989-09-29
Abstract
No abstract record available.
Inventors
- 👤 Warren W Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:09
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/03; B; B65; B65H; B65H67/00; B65H67/04; B65H67/044; B65H67/056; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10S; Y10S242/00; Y10S242/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2255426A
Cited
US2622810A
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US3273985A
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US3265476A
Cited
US3281224A
Cited
US3244383A
Cited
US3293013A
Cited
US3279904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |