US3064878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for high performance evacuation system
Assignee: Nash Engineering Co
•
Filing: 1958-01-03
•
Granted: 1962-11-20
•
Expires: 1978-01-03
Abstract
No abstract record available.
Inventors
- 👤 William H Bayles
- 👤 Benjamin C Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:18
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/46; F04F5/461; F04F5/465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2493387A
Cited
US1718294A
Cited
US299267A
Cited
DE647707C
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US741270A
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US1010456A
Cited
US1055210A
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US1134215A
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US1472874A
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US1575770A
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US1845969A
Cited
US1797980A
Cited
US2096883A
Cited
US2095534A
Cited
DE711791C
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US2268656A
Cited
US2231090A
Cited
US2631774A
Cited
DE800086C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |