US2613543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper motor
Assignee: CROWN CONTROLS Co Inc
•
Filing: 1949-05-20
•
Granted: 1952-10-14
•
Expires: 1969-05-20
Abstract
No abstract record available.
Inventors
- 👤 Wilbert A Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:56
CPC Classifications
F; F23; F23L; F23L11/00; F23L11/02; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US202052A
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US417966A
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US461055A
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US505270A
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US506204A
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US1164323A
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US1887517A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |