US3038538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper machine headbox
Assignee: Individual
•
Filing: 1958-05-28
•
Granted: 1962-06-12
•
Expires: 1978-05-28
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Logan
- 👤 Mardon James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:10
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB668822A
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DE855502C
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US2929449A
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US2894581A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |