US2749156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1952-04-18
•
Granted: 1956-06-05
•
Expires: 1972-04-18
Abstract
No abstract record available.
Inventors
- 👤 Cliborn Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:40
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/12; F04D29/126; F04D29/128; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; Y; Y10; Y10S; Y10S277/00; Y10S277/925; Y10T; Y10T403/00; Y10T403/32; Y10T403/32975
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA473951A
Cited
US2003003A
Cited
US2308114A
Cited
US2404610A
Cited
US2509973A
Cited
US2445018A
Cited
US2538987A
Cited
US2662480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |