US2788236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural-part knob construction
Assignee: Independent Lock Co
•
Filing: 1953-04-27
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Granted: 1957-04-09
•
Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Kafowi Jan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:36
CPC Classifications
E; E05; E05B; E05B1/00; E05B1/0007; Y; Y10; Y10T; Y10T292/00; Y10T292/82
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-08 | 1960-10-08 | 1961-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-08 | 1964-10-08 | 1965-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-08 | 1968-10-08 | 1969-04-09 | $7700.00 | Window Closed / Lapsed |