US2639763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire spring
Assignee: Universal Wire Spring Co
•
Filing: 1949-09-26
•
Granted: 1953-05-26
•
Expires: 1969-09-26
Abstract
No abstract record available.
Inventors
- 👤 William H Neely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:55
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE96867C
Cited
US401287A
Cited
US751147A
Cited
GB191228617A
Cited
US2134371A
Cited
US2257367A
Cited
US2279336A
Cited
US2330906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |