US2697250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding machine
Assignee: Armstrong World Industries Inc
•
Filing: 1951-09-10
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Granted: 1954-12-21
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Expires: 1971-09-10
Abstract
No abstract record available.
Inventors
- 👤 Earl E Heinzelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:37
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0003; B29C37/0017; B29C37/0021; B29C43/00; B29C43/02; B29C43/04; B29C43/06; B29C43/08; B29C43/32; B29C43/50; B29C2043/3272; B29C2043/3283; B29C2043/3288; B29C43/36; B29C2043/3676; B29C2043/3678; B29C33/00; B29C33/44; B29C33/442; B29C33/444; B29C33/446; B29L; B29L2001/00; B29L2031/00; B29L2031/56; B29L2031/565; B29L2031/712
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2441525A
Cited
US2513216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |