US2798357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning ring
Assignee: Joh Jacob Rieter und Cie AG
•
Filing: 1952-09-22
•
Granted: 1957-07-09
•
Expires: 1972-09-22
Abstract
No abstract record available.
Inventors
- 👤 Stahli Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:03
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/52; D01H7/60; D01H7/602
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
A SPINNING RING MADE OF AN ALUMINUM ALLOY WHOSE SPECIFIC HEAT CONDUCTIVITY IS GREATER THAN 0.25 CAL/./CM. SEC. *C. AND HAVING A NON-METALLIC SURFACE COATING.
References Cited (Backward Citations)
GB621163A
Cited
US273090A
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US580411A
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US717748A
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US1065704A
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US1399418A
Cited
US1595858A
Cited
US2157155A
Cited
US2194930A
Cited
US2618116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |