US2517240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door knob assembly
Assignee: Waldes Kohinoor Inc
•
Filing: 1948-04-22
•
Granted: 1950-08-01
•
Expires: 1968-04-22
Abstract
No abstract record available.
Inventors
- 👤 Roberts Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:07
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B21/18; F16B21/186; E; E05; E05B; E05B3/00; E05B3/04; E05B63/00; E05B63/0056; E05B63/006; Y; Y10; Y10T; Y10T292/00; Y10T292/85; Y10T292/869
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) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |