US2448640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax caster
Assignee: Individual
•
Filing: 1946-04-13
•
Granted: 1948-09-07
•
Expires: 1966-04-13
Abstract
No abstract record available.
Inventors
- 👤 Cornelius F Weston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:39
CPC Classifications
B; B29; B29C; B29C67/00; B29C67/24; B29C67/241; B29C39/00; B29C39/02; B29C39/04; B29C39/08; B29K; B29K2821/00; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1642199A
Cited
US1965732A
Cited
US1983602A
Cited
US2055742A
Cited
US2118468A
Cited
US2152738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |