US2202909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1937-09-27
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Granted: 1940-06-04
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Expires: 1957-09-27
Abstract
No abstract record available.
Inventors
- 👤 George H Hufferd
- 👤 Matthew P Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/10; B21C37/104; B21C37/15; B21C37/156; B21C37/157; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-06-04 | 1943-12-04 | 1944-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-06-04 | 1947-12-04 | 1948-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-06-04 | 1951-12-04 | 1952-06-04 | $7700.00 | Window Closed / Lapsed |