Patent US3516516A successfully refreshed from Google Patents.
US3516516A
Expired / Lapsed
US
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Lubricator for air motors
Assignee: MASTER PHEUMATIC DETROIT Inc
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Filing: 1968-09-16
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Granted: 1970-06-23
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Expires: 1988-09-16
Abstract
No abstract record available.
Inventors
- 👤 John T Bertva
- 👤 George E Thrasher Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:19
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87676
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |