US2674483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door control mechanism
Assignee: RUDOLPH I SCHONITZER
•
Filing: 1949-10-21
•
Granted: 1954-04-06
•
Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Vito Angelo R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:40
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1062; Y10T292/68; Y10T292/688
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1203595A
Cited
US1490874A
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US2074191A
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US2156874A
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US2311686A
Cited
US2314400A
Cited
US2552815A
Cited
US2603516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |