US2174877A
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Assignee: Union Carbide Corp
•
Filing: 1935-07-02
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Granted: 1939-10-03
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Expires: 1955-07-02
Abstract
No abstract record available.
Inventors
- 👤 Herman G Graubner
- 👤 Albert G Saurwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:24
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414; H; H01; H01H; H01H15/00; H01H15/02; H01H15/06; H01H15/16; H01H15/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-10-02 | 1943-04-03 | 1943-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-02 | 1947-04-03 | 1947-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-02 | 1951-04-03 | 1951-10-03 | $7700.00 | Window Closed / Lapsed |