US2638620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doorstop
Assignee: Individual
•
Filing: 1949-04-13
•
Granted: 1953-05-19
•
Expires: 1969-04-13
Abstract
No abstract record available.
Inventors
- 👤 Civitelli Gennaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:28
CPC Classifications
E; E05; E05F; E05F5/00; E05F5/06; E05D; E05D11/00; E05D11/06; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/224; E05Y2201/60; E05Y2201/622; E05Y2201/696; E05Y2201/702; E05Y2600/00; E05Y2600/10; E05Y2600/20; E05Y2600/30; E05Y2600/31; E05Y2600/312; E05Y2600/32; E05Y2600/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |