Patent US3502158A successfully refreshed from Google Patents.
US3502158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air operated tool with rear exhaust
Assignee: DOTCO Inc
•
Filing: 1968-06-18
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Granted: 1970-03-24
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Expires: 1988-06-18
Abstract
No abstract record available.
Inventors
- 👤 Philip A Snider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/10; B24B47/14; B24B23/00; B24B23/02; B24B23/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US751261A
Cited
US888506A
Cited
US970225A
Cited
US1862223A
Cited
US2492966A
Cited
US2966138A
Cited
US3299781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |