US3028767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive mechanism
Assignee: Northrop Grumman Corp
•
Filing: 1960-07-26
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Granted: 1962-04-10
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Expires: 1980-07-26
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:32
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44; G11B15/26; G11B15/32; G11B25/00; G11B25/06; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19084; Y10T74/19172; Y10T74/19219; Y10T74/19358; Y10T74/19367; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19442; Y10T74/19447
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2896873A
Cited
US2871716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |