US3011331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key assembly retention system
Assignee: Dexter Industries Inc
•
Filing: 1958-03-06
•
Granted: 1961-12-05
•
Expires: 1978-03-06
Abstract
No abstract record available.
Inventors
- 👤 Murray E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:45
CPC Classifications
E; E05; E05B; E05B55/00; E05B55/005; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/577; Y10T70/5792; Y10T70/5796; Y10T70/5832; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7655
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2007350A
Cited
US2008668A
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US1945779A
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US2266086A
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US2497750A
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US2640345A
Cited
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US2825220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |