Patent US2482740A successfully refreshed from Google Patents.
US2482740A
Expired / Lapsed
US
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Roller and drum mill for flaking mica
Assignee: RICHMOND MICA Co
•
Filing: 1944-08-25
•
Granted: 1949-09-27
•
Expires: 1964-08-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Potter Maclay Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:09
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/32; B28D1/322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US546197A
Cited
DE259540C
Cited
US237839A
Cited
US413388A
Cited
US425886A
Cited
US533384A
Cited
US563459A
Cited
DE150189C
Cited
US735664A
Cited
GB190407805A
Cited
US845450A
Cited
GB190619665A
Cited
US1055599A
Cited
US1064680A
Cited
GB191118978A
Cited
US1126085A
Cited
FR466698A
Cited
US1169075A
Cited
US1398970A
Cited
US1428687A
Cited
DE400229C
Cited
US1540588A
Cited
US1661597A
Cited
US1829039A
Cited
US2030239A
Cited
US2185158A
Cited
US2198463A
Cited
US2380741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-26 | 1953-03-28 | 1953-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-26 | 1957-03-28 | 1957-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-26 | 1961-03-28 | 1961-09-27 | $7700.00 | Window Closed / Lapsed |