US3191852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical carbon parts
Assignee: —
•
Filing: —
•
Granted: 1965-06-29
•
Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
F; F04; F04D; F04D19/00; Y; Y10; Y10S; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
THE COMBINATION OF TWO CARBON ELEMENTS IN SLIDING CONTACT WHEREIN ONLY ONE OF SAID ELEMENTS IS IMPREGNATED WITH A SUBSTANTIALLY NON-HYGROSCOPIC METALLIC HALIDE.
Claim 2
Dependent Claim
23 words
THE COMBINATION OF TWO CARBON ELEMENTS IN SLIDING CONTACT WHEREIN ONLY ONE OF SAID ELEMENTS IS IMPREGNATED WITH A SUBSTANTIALLY NON-HYGROSCOPIC METALLIC HALIDE.
References Cited (Backward Citations)
US2418420A
Cited
US2414514A
Cited
US2817605A
Cited
US2818024A
Cited
US2925786A
Cited
US2860076A
Cited
US2959698A
Cited
US3031342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |