US2895751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen seal for dynamoelectric machines
Assignee: Allis Chalmers Corp
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Filing: 1957-07-05
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Granted: 1959-07-21
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Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Earl L Standish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:02
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/124; Y; Y10; Y10S; Y10S277/00; Y10S277/93
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) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |