US2848264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door knob structure
Assignee: Independent Lock Co
•
Filing: 1955-05-25
•
Granted: 1958-08-19
•
Expires: 1975-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert J Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:22
CPC Classifications
E; E05; E05B; E05B3/00; E05B3/003; Y; Y10; Y10T; Y10T292/00; Y10T292/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1613751A
Cited
US1853782A
Cited
US2294213A
Cited
US2571767A
Cited
US2698763A
Cited
US2728597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |