US2453855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic lock
Assignee: Adel Precision Products Corp
•
Filing: 1947-11-21
•
Granted: 1948-11-16
•
Expires: 1967-11-21
Abstract
No abstract record available.
Inventors
- 👤 Wilbur C Ollver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:55
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1633; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |