US2580165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for platform rockers
Assignee: Seng Co
•
Filing: 1950-06-14
•
Granted: 1951-12-25
•
Expires: 1970-06-14
Abstract
No abstract record available.
Inventors
- 👤 Fox Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:53
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/03; A47C3/025; A47C3/027; Y; Y10; Y10S; Y10S297/00; Y10S297/07; Y10T; Y10T24/00; Y10T24/39; Y10T24/3936; Y10T24/394; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |