US2984186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple pump unit
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1957-07-11
•
Granted: 1961-05-16
•
Expires: 1977-07-11
Abstract
No abstract record available.
Inventors
- 👤 William T Livermore
- 👤 Hubert M Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:56
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245691A
Cited
US1779757A
Cited
CH223598A
Cited
US2377556A
Cited
US2434135A
Cited
US2511441A
Cited
US2590728A
Cited
FR1046702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |