US2040864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device
Assignee: Milwaukee Gas Specialty Co
•
Filing: 1931-08-31
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Granted: 1936-05-19
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Expires: 1951-08-31
Abstract
No abstract record available.
Inventors
- 👤 Harold A Mantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:02
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/46; Y; Y10; Y10T; Y10T137/00; Y10T137/1407
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) | 1939-05-19 | 1939-11-18 | 1940-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-19 | 1943-11-18 | 1944-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-19 | 1947-11-18 | 1948-05-19 | $7700.00 | Window Closed / Lapsed |