US2911900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retaining means for the dampers of ventilators
Assignee: Loren Cook Co
•
Filing: 1957-06-06
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Granted: 1959-11-10
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Rudy Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:16
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/02; F24F7/025; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/12; F04D25/14; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1413; F24F13/1426
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |