US3063086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door holding mechanism
Assignee: RAND Corporation
•
Filing: 1960-05-13
•
Granted: 1962-11-13
•
Expires: 1980-05-13
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Calhoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:52
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/22; E05F3/221; E05F3/222; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T292/00; Y10T292/28; Y10T292/301
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE517692C
Cited
US1031287A
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US1133453A
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US1343856A
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US1430192A
Cited
US1668341A
Cited
US2314544A
Cited
US2368875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |