Patent US2943445A successfully refreshed from Google Patents.
US2943445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Missile safety closure
Assignee: Douglas Aircraft Co Inc
•
Filing: 1955-06-27
•
Granted: 1960-07-05
•
Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 Jack H Ritterskamp
- 👤 Carl A Weise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:26
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/38; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0803; Y10T292/0805; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5248; Y10T70/5252; Y10T70/5261
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1691975A
Cited
US1788118A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |