Patent US2639142A successfully refreshed from Google Patents.
US2639142A
Expired / Lapsed
US
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Automatic door actuator
Assignee: PERFECTION PLASTIC ENGINEERING
•
Filing: 1950-02-08
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Granted: 1953-05-19
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Expires: 1970-02-08
Abstract
No abstract record available.
Inventors
- 👤 Morgan John Lowler
- 👤 William J Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:56
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05F3/224; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05F15/70; E05F15/73; E05F15/75; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/404; E05Y2201/41; E05Y2201/422; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2400/3015; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |