US2843376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operators
Assignee: ROBOT APPLIANCES Inc
•
Filing: 1955-10-04
•
Granted: 1958-07-15
•
Expires: 1975-10-04
Abstract
No abstract record available.
Inventors
- 👤 Francis J Osuch
- 👤 Krake Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:33
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/611; E05F15/63; E05Y; E05Y2201/00; E05Y2201/20; E05Y2201/23; E05Y2201/232; E05Y2201/236; E05Y2400/00; E05Y2400/10; E05Y2400/30; E05Y2400/3013; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1443736A
Cited
US1666916A
Cited
US2053376A
Cited
US2138521A
Cited
US2574760A
Cited
US2676294A
Cited
US2639142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |