US2490129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for fabricating mica
Assignee: Integrated Mica Corp
•
Filing: 1945-09-17
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Granted: 1949-12-06
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Expires: 1965-09-17
Abstract
No abstract record available.
Inventors
- 👤 Moses D Heyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:49
CPC Classifications
B; B03; B03B; B03B7/00; B28; B28D; B28D1/00; B28D1/32; B28D1/322; C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1740662A
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US1807206A
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US1823136A
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US2027082A
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US2270568A
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US2405576A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |