US2720673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door checking and holding device
Assignee: Ford Motor Co
•
Filing: 1950-12-01
•
Granted: 1955-10-18
•
Expires: 1970-12-01
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:11
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/32; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/282
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1359409A
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US1544657A
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US2272230A
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US2308759A
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US2392689A
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US2612651A
Cited
US2580593A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |