US2526565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double lock core head
Assignee: Individual
•
Filing: 1948-03-23
•
Granted: 1950-10-17
•
Expires: 1968-03-23
Abstract
No abstract record available.
Inventors
- 👤 Archie H Kennard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:33
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/246; B65H75/247; F; F16; F16D; F16D1/00; F16D1/06; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4974; Y10T403/70; Y10T403/7009
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) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |