Patent US6604434B1 successfully refreshed from Google Patents.
US2426401A
Expired / Lapsed
US
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Apparatus for applying a tubular fabric cover to rolls
Assignee: Roberts and Porter Inc
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Filing: 1945-08-18
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Granted: 1947-08-26
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Expires: 1965-08-18
Abstract
No abstract record available.
Inventors
- 👤 Norman A Mack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:06
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/005; B41N2207/00; B41N2207/02; B41N2207/14; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53652
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-25 | 1951-02-24 | 1951-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-25 | 1955-02-24 | 1955-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-25 | 1959-02-24 | 1959-08-26 | $7700.00 | Window Closed / Lapsed |