Patent US3448574A successfully refreshed from Google Patents.
US3448574A
Expired / Lapsed
US
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Linear material modification
Assignee: Individual
•
Filing: 1968-08-05
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Granted: 1969-06-10
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Expires: 1988-08-05
Abstract
No abstract record available.
Inventors
- 👤 Evan Islwyn Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:58
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2881504A
Cited
US2963848A
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US3010271A
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US3035396A
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US3148520A
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US3050819A
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US3178795A
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US3261116A
Cited
US3192697A
Cited
US3411282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |