Patent US2606022A successfully refreshed from Google Patents.
US2606022A
Expired / Lapsed
US
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Door operation and control
Assignee: National Pneumatic Co Inc
•
Filing: 1948-05-18
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Granted: 1952-08-05
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Expires: 1968-05-18
Abstract
No abstract record available.
Inventors
- 👤 Veer John H Vander
- 👤 Cyrus W Bassett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:40
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/53; Y; Y10; Y10S; Y10S60/00; Y10S60/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1326228A
Cited
US1564885A
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US977270A
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US990877A
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US1072749A
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US1037267A
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US1277000A
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US1431986A
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US1529434A
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US1935968A
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US1925976A
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US2365742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |