US2880861A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing a roll of wound spring wire and resulting product
Assignee: ZIG ZAG SPRING Co
•
Filing: 1954-07-09
•
Granted: 1959-04-07
•
Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Harry B Sklar
- 👤 Harry H Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:48
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/02; B; B21; B21F; B21F33/00; B21F33/002; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609; Y10T29/49613; Y10T428/00; Y10T428/12; Y10T428/12333
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1258092A
Cited
US1902491A
Cited
US2047717A
Cited
US2038305A
Cited
US2188406A
Cited
US2123798A
Cited
US2173096A
Cited
US2483865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |