US2655909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame finishing of granite surfaces
Assignee: Union Carbide Corp
•
Filing: 1948-10-29
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Granted: 1953-10-20
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Expires: 1968-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert B Aitchison
- 👤 Hicks Howard Leslie
- 👤 James R Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:39
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06; B28; B28D; B28D1/00; E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US561367A
Cited
US1910748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |