US2145704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring device
Assignee: General Spring Corp
•
Filing: 1935-05-09
•
Granted: 1939-01-31
•
Expires: 1955-05-09
Abstract
No abstract record available.
Inventors
- 👤 Wood Joseph Kaye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:48
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/16; F16L3/20; F16L3/205; F16L3/2053; F16L3/2056; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006; Y10T74/20396; Y10T74/20402; Y10T74/20408; Y10T74/20558; Y10T74/21; Y10T74/2142; Y10T74/2154; Y10T74/2158
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-01-30 | 1942-08-01 | 1943-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-01-30 | 1946-08-01 | 1947-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-01-30 | 1950-08-01 | 1951-01-31 | $7700.00 | Window Closed / Lapsed |