US3055053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature gradient screw melter
Assignee: EIDP Inc
•
Filing: 1959-11-12
•
Granted: 1962-09-25
•
Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Richard D Livingston
- 👤 Jr Robert C Treadwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:07
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/80; B29C48/84; B29C48/845; B29C48/83; B29C48/832; B29C48/875; B29C48/03; Y; Y10; Y10S; Y10S425/00; Y10S425/013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1496356A
Cited
US1677651A
Cited
US2303340A
Cited
US2449355A
Cited
US2692405A
Cited
US2622182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |