US2373166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper construction
Assignee: Westinghouse Electric Corp
•
Filing: 1943-10-14
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Granted: 1945-04-10
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Expires: 1963-10-14
Abstract
No abstract record available.
Inventors
- 👤 Stuart H Chapman
- 👤 Arthur F Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:38
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87153; Y10T137/87161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-04-09 | 1948-10-09 | 1949-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-09 | 1952-10-09 | 1953-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-09 | 1956-10-09 | 1957-04-10 | $7700.00 | Window Closed / Lapsed |