Patent US2647556A successfully refreshed from Google Patents.
US2647556A
Expired / Lapsed
US
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Process of applying covers to drawing rolls
Assignee: Individual
•
Filing: 1948-05-20
•
Granted: 1953-08-04
•
Expires: 1968-05-20
Abstract
No abstract record available.
Inventors
- 👤 Edward J Courtney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
D; D01; D01H; D01H5/00; D01H5/18; D01H5/70; D01H5/74; D01H5/80; D01H2700/00; D01H2700/245; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/53; Y10T29/53652; Y10T29/53657
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1303614A
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US647146A
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US692855A
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US1103772A
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US1205345A
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US1706635A
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US1919694A
Cited
US1984625A
Cited
US2001977A
Cited
US2022170A
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US2446038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |