US2780175A
Expired / Lapsed
US
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Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1951-03-17
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Granted: 1957-02-05
•
Expires: 1971-03-17
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Thoren
- 👤 Richard L Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:34
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/04; F02M37/08; F02M37/20; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2238; F04D29/2255; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7934
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |