US2901867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision vapor or sand blasting machines
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1957-10-17
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Granted: 1959-09-01
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Expires: 1977-10-17
Abstract
No abstract record available.
Inventors
- 👤 Wilbur M Bolton
- 👤 Raymond L Ruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:51
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/08; B24C3/083; B24C3/10; B24C3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1285057A
Cited
US2038204A
Cited
US2365250A
Cited
US2571573A
Cited
US2612731A
Cited
US2621446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |