US2648368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupled nut and lock washer
Assignee: Illinois Tool Works Inc
•
Filing: 1949-07-22
•
Granted: 1953-08-11
•
Expires: 1969-07-22
Abstract
No abstract record available.
Inventors
- 👤 John B O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:35
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/24; F16B39/26; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/956; Y10S411/957; Y10S411/959
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190101315A
Cited
CH81356A
Cited
FR508300A
Cited
US1638788A
Cited
CH110337A
Cited
US2021051A
Cited
US2225654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |