US2521282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated plastics press
Assignee: Individual
•
Filing: 1947-11-21
•
Granted: 1950-09-05
•
Expires: 1967-11-21
Abstract
No abstract record available.
Inventors
- 👤 Roy E Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:53
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/02; B29C33/04; B29C33/046; B29C43/00; B29C43/32; B29C43/52; B29C43/58; B29C35/00; B29C35/02; B29C2035/0211; B29C35/16; B29C2035/1658; B29C37/00; B29C2037/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US958813A
Cited
US1537697A
Cited
US1443378A
Cited
US1417993A
Cited
US1531415A
Cited
US1798136A
Cited
US1979471A
Cited
US1949275A
Cited
US2184270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |