US2543892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inner collapsible molding form
Assignee: Individual
•
Filing: 1948-12-29
•
Granted: 1951-03-06
•
Expires: 1968-12-29
Abstract
No abstract record available.
Inventors
- 👤 John H K Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/16; B28B7/168; B28B7/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1472004A
Cited
US1515057A
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US1611287A
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US1591759A
Cited
FR599716A
Cited
US2032637A
Cited
US2278089A
Cited
US2344738A
Cited
US2474654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |