Patent US2772719A successfully refreshed from Google Patents.
US2772719A
Expired / Lapsed
US
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Method of welding rubber articles
Assignee: Individual
•
Filing: 1954-07-09
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Granted: 1956-12-04
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Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Robert L Wills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:36
CPC Classifications
B; B29; B29C; B29C73/00; B29C73/04; B29C73/06; B29L; B29L2030/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1591817A
Cited
US1591816A
Cited
US1899676A
Cited
US2004037A
Cited
US2370958A
Cited
US2430076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |