US2686930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic safety device
Assignee: United Shoe Machinery Corp
•
Filing: 1951-12-22
•
Granted: 1954-08-24
•
Expires: 1971-12-22
Abstract
No abstract record available.
Inventors
- 👤 James P Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:42
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/58; B29B7/72; B29B7/722; F; F16; F16P; F16P5/00; F16P5/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US833694A
Cited
US1628297A
Cited
GB275403A
Cited
US2407754A
Cited
US2417374A
Cited
US2515068A
Cited
US2631675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |