Patent US1976298A successfully refreshed from Google Patents.
US1976298A
Expired / Lapsed
US
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Temperature control
Assignee: AO Smith Corp
•
Filing: 1933-09-23
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Granted: 1934-10-09
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Expires: 1953-09-23
Abstract
No abstract record available.
Inventors
- 👤 Richter Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:11
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/126; G05B2219/00; G05B2219/20; G05B2219/23; G05B2219/23202; Y; Y10; Y10S; Y10S33/00; Y10S33/03
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) | 1937-10-08 | 1938-04-09 | 1938-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-08 | 1942-04-09 | 1942-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-08 | 1946-04-09 | 1946-10-09 | $7700.00 | Window Closed / Lapsed |