Patent US2598645A successfully refreshed from Google Patents.
Patent US2681028A successfully refreshed from Google Patents.
US2681028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding ring
Assignee: WEDGE PROTECTORS Inc
•
Filing: 1950-04-29
•
Granted: 1954-06-15
•
Expires: 1970-04-29
Abstract
No abstract record available.
Inventors
- 👤 Stanley L Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:39
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/035; B23K9/0358
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1298100A
Cited
US1715268A
Cited
US1981850A
Cited
US1987341A
Cited
US2330207A
Cited
US2506687A
Cited
US2472523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |