US2648939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic grinder
Assignee: Vulcan Tool Co
•
Filing: 1947-10-18
•
Granted: 1953-08-18
•
Expires: 1967-10-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Zelik
- 👤 Finley A Jennings
- 👤 Fred A High
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:40
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/002; Y; Y10; Y10S; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US899119A
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US1107179A
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US1557326A
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US1839253A
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US1864019A
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US1864027A
Cited
US2403546A
Cited
FR920919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |