Patent US2999000A successfully refreshed from Google Patents.
US2999000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating arrangement for co-axial shafts
Assignee: Individual
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Filing: 1960-04-14
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Granted: 1961-09-05
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Expires: 1980-04-14
Abstract
No abstract record available.
Inventors
- 👤 Spat Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:38
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/36; F01; F01D; F01D25/00; F01D25/18; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6637; F16C33/6659; F16C33/6677; F16C19/00; F16C19/22; F16C19/24; F16C19/26; F16C19/54; F16C19/55; F16C2360/00; F16C2360/23; F16N21/00; F16N2210/00; F16N2210/02; F16N2210/14; F16N2270/00; F16N2270/20; F16N2270/22
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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |