US2740284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock
Assignee: Illinois Lock Co
•
Filing: 1951-10-30
•
Granted: 1956-04-03
•
Expires: 1971-10-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond K Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:54
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/02; E05B65/025; Y; Y10; Y10S; Y10S292/00; Y10S292/68; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5097; Y10T70/5102; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; 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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |