US2654358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing slate shingles or the like
Assignee: Individual
•
Filing: 1950-04-28
•
Granted: 1953-10-06
•
Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene T Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:06
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/32; B28D1/003; B28D7/00; B28D7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1217152A
Cited
US1590385A
Cited
US1654770A
Cited
US1841018A
Cited
US1909001A
Cited
US2467728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |