Patent US2898639A successfully refreshed from Google Patents.
US2898639A
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US
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Power actuated movers for telescoping gymnasium seat-structures
Assignee: FRED MEDART MANUFACTURING Co
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Filing: 1957-07-01
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Granted: 1959-08-11
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Expires: 1977-07-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:50
CPC Classifications
E; E04; E04H; E04H3/00; E04H3/10; E04H3/12; E04H3/123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1301107A
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US1685697A
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US1841958A
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US2147564A
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US2489274A
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US2846738A
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US2877507A
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US2851179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |