Patent US2539863A successfully refreshed from Google Patents.
US2539863A
Expired / Lapsed
US
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Method of finishing tubes
Assignee: Cleveland Pneumatic Tool Co
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Filing: 1945-12-12
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Granted: 1951-01-30
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Expires: 1965-12-12
Abstract
No abstract record available.
Inventors
- 👤 Rusnov Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:03
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/30; Y; Y10; Y10S; Y10S138/00; Y10S138/07; Y10T; Y10T408/00; Y10T408/03; Y10T408/47; Y10T408/482; Y10T408/55; Y10T408/561; Y10T408/5626; Y10T408/5627; Y10T408/56275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB105715A
Cited
DE393608C
Cited
US2003570A
Cited
US2006916A
Cited
US2200544A
Cited
US2401078A
Cited
US2412454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |