US3442633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for conveying and for treating glass fibers
Assignee: Individual
•
Filing: 1967-12-29
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Granted: 1969-05-06
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Expires: 1987-12-29
Abstract
No abstract record available.
Inventors
- 👤 Walter Merton Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/60; C; C03; C03B; C03B37/00; C03B37/01; C03B37/06; C03B37/065; D04H1/70; D04H1/72
Claims Analysis
Total Claims: 0
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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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |