US2589480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic door operator
Assignee: UNITED STATES MOTORS Corp
•
Filing: 1951-04-05
•
Granted: 1952-03-18
•
Expires: 1971-04-05
Abstract
No abstract record available.
Inventors
- 👤 Guy A Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:43
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/681; E05F15/684; E05Y; E05Y2800/00; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1632237A
Cited
US1641067A
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US1962475A
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US1966762A
Cited
US2084733A
Cited
US2194650A
Cited
US2262719A
Cited
US2424385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |