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Patent US2593181A successfully refreshed from Google Patents.
US2593181A
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Assignee: Harris Corp
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Filing: 1946-07-30
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Granted: 1952-04-15
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Expires: 1966-07-30
Abstract
No abstract record available.
Inventors
- 👤 Howard A Pritchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:45
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/42; B65H2403/00; B65H2403/50; B65H2403/54; B65H2403/543
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE390443C
Cited
US1775677A
Cited
US2084065A
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US2097587A
Cited
US2195545A
Cited
US2162450A
Cited
US2425936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |