Patent US2390801A successfully refreshed from Google Patents.
US2390801A
Expired / Lapsed
US
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Joint for exhaust manifold systems
Assignee: POLLAK Manufacturing Co
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Filing: 1944-07-25
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Granted: 1945-12-11
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Expires: 1964-07-25
Abstract
No abstract record available.
Inventors
- 👤 Roscoe I Markey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:12
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1805; F01N13/1811; F16; F16L; F16L23/00; F16L23/04; F16L23/06; F01N2450/00; F01N2450/18; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1412; Y10T24/1424; Y10T24/21; Y10T24/2143; Y10T24/2153
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) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |