US2550050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water tempering and measuring system
Assignee: COTTAGE DONUTS Inc
•
Filing: 1946-02-15
•
Granted: 1951-04-24
•
Expires: 1966-02-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred Emerson
- 👤 Fred L A Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:04
CPC Classifications
F; F24; F24D; F24D17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US775021A
Cited
US760443A
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US1110137A
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US1774475A
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US1636698A
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US2332438A
Cited
US2321573A
Cited
US2346259A
Cited
US2387894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |