Patent US3440690A successfully refreshed from Google Patents.
US3440690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for feeding fibrous materials
Assignee: Hollingsworth UK Ltd
•
Filing: 1966-11-03
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Granted: 1969-04-29
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert Greenwood
- 👤 Walter Howarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:58
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/32; D01H5/38; D01H5/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US802492A
Cited
US2244203A
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US2608725A
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FR68315E
Cited
US2981986A
Cited
US2964803A
Cited
US3038216A
Cited
GB930873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |