Patent US1880306A successfully refreshed from Google Patents.
US1880306A
Expired / Lapsed
US
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Method of producing high temperatures
Assignee: Individual
•
Filing: 1927-12-27
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Granted: 1932-10-04
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Expires: 1947-12-27
Abstract
No abstract record available.
Inventors
- 👤 Robert G Wulff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:55
CPC Classifications
C; C10; C10G; C10G9/00; C10G9/26; B; B01; B01J; B01J38/00; B01J38/04; B01J38/12; Y; Y10; Y10S; Y10S48/00; Y10S48/05; Y10S585/00; Y10S585/909; Y10S585/911; Y10S585/913
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) | 1935-10-04 | 1936-04-04 | 1936-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-10-04 | 1940-04-04 | 1940-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-10-04 | 1944-04-04 | 1944-10-04 | $7700.00 | Window Closed / Lapsed |