Patent US2839187A successfully refreshed from Google Patents.
US2839187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulk roll of zigzag spring wire and method of making same
Assignee: ZIG ZAG SPRING Co
•
Filing: 1955-09-01
•
Granted: 1958-06-17
•
Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Harry H Norman
- 👤 Harry B Sklar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:45
CPC Classifications
B; B21; B21F; B21F33/00; B21F33/002; B65; B65D; B65D85/00; B65D85/67; B65D85/675; B65D85/676; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/1241
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1401904A
Cited
US2123798A
Cited
US2158889A
Cited
US2483865A
Cited
US2639097A
Cited
US2604986A
Cited
US2614764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |