Patent US3582632A successfully refreshed from Google Patents.
Patent US4382178A successfully refreshed from Google Patents.
Patent US4834602A successfully refreshed from Google Patents.
Patent US2820874A successfully refreshed from Google Patents.
US2820874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of chains
Assignee: ARTHUR GEORGE JAMES
•
Filing: 1953-07-01
•
Granted: 1958-01-21
•
Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Dunn Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:09
CPC Classifications
B; B23; B23K; B23K13/00; B21; B21L; B21L3/00; B21L3/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US451797A
Cited
US528819A
Cited
US778269A
Cited
US798692A
Cited
US1093207A
Cited
US1490647A
Cited
US1809468A
Cited
US2280689A
Cited
US2288494A
Cited
US2528810A
Cited
GB655400A
Cited
US2528758A
Cited
GB697615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |