US2907069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum molding machine
Assignee: NATIONAL CLEVELAND CORP
•
Filing: 1956-02-02
•
Granted: 1959-10-06
•
Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Butzko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:41
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/261; B29C51/262
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1918888A
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US2240010A
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US2340191A
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US2318310A
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US2285389A
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US2301125A
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US2424915A
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US2454437A
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US2700179A
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US2765493A
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US2771619A
Cited
US2759217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |