US3408927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press for making blocks from loose fiber material
Assignee: PORTCO CORP
•
Filing: 1966-09-26
•
Granted: 1968-11-05
•
Expires: 1986-09-26
Abstract
No abstract record available.
Inventors
- 👤 Charles B Willock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/3078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA650785A
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US1332340A
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US1966378A
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US2355675A
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US2780987A
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US2984172A
Cited
US2985101A
Cited
US3089410A
Cited
GB969330A
Cited
US3161124A
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US3266096A
Cited
US3327622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |