US2850768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible curing rim
Assignee: Individual
•
Filing: 1953-09-17
•
Granted: 1958-09-09
•
Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Malcolm C Elrick
- 👤 Marcus B Champlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:02
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US496321A
Cited
US497464A
Cited
US1320199A
Cited
US812148A
Cited
US1368862A
Cited
US1788428A
Cited
US1938437A
Cited
US2152765A
Cited
US2372246A
Cited
US2561573A
Cited
US2724861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |