US3011518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic damper
Assignee: CONNOR ENG CORP
•
Filing: 1958-07-09
•
Granted: 1961-12-05
•
Expires: 1978-07-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Day
- 👤 Edgar J Totsas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:43
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F16; F16K; F16K7/00; F16K7/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87434
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1931356A
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US1991184A
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US2592724A
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US2676609A
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US2672088A
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US2660946A
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US2712786A
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US2687145A
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US2874925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |