US2834299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for diaphragm casings
Assignee: ACF Industries Inc
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Filing: 1956-10-15
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Granted: 1958-05-13
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Expires: 1976-10-15
Abstract
No abstract record available.
Inventors
- 👤 Irven E Coffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:42
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/50; F16J15/52; F02; F02M; F02M59/00; F02M59/12; F02M59/14; F04; F04B; F04B11/00; F04B43/00; F04B43/02; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1323
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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |