US3454375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear resistant cobalt bonded tungsten carbide composite
Assignee: Ingersoll Rand Co
•
Filing: 1966-10-17
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Granted: 1969-07-08
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Robert S Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:42
CPC Classifications
C; C23; C23C; C23C30/00; C23C30/005; C22; C22C; C22C29/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12493; Y10T428/12708; Y10T428/12722; Y10T428/12771; Y10T428/12778
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1910884A
Cited
US1984203A
Cited
US2313227A
Cited
US2313070A
Cited
US2439570A
Cited
US2731711A
Cited
US3153163A
Cited
US3165822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |