US3039778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid seal
Assignee: Allis Chalmers Corp
•
Filing: 1958-11-17
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Granted: 1962-06-19
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Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Leonard H Sence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:13
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F01; F01D; F01D11/00; F01D11/003; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/106; F16J15/34; F16J15/38; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/104; Y; Y10; Y10S; Y10S277/00; Y10S277/926
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1996780A
Cited
US2007414A
Cited
US2087313A
Cited
US2328578A
Cited
US2329990A
Cited
US2383862A
Cited
US2479265A
Cited
US2761711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |