Patent US3424645A successfully refreshed from Google Patents.
US3424645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruded foamed fibers
Assignee: Haveg Industries Inc
•
Filing: 1964-07-30
•
Granted: 1969-01-28
•
Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Ohsol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:06
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/24; D01D5/247; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/46; B29C44/50; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2935; Y10T428/2973; Y10T428/2975; Y10T428/298
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2492425A
Cited
US2948048A
Cited
US2893877A
Cited
US3069406A
Cited
GB854586A
Cited
US3059251A
Cited
US3227664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |