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Patent US1237470A successfully refreshed from Google Patents.
US1237470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hygrostat.
Assignee: Buffalo Forge Co
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Filing: 1915-04-17
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Granted: 1917-08-21
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Expires: 1935-04-17
Abstract
No abstract record available.
Inventors
- 👤 Willis H Carrier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:05
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/10; Y; Y10; Y10S; Y10S200/00; Y10S200/14; Y10S200/40; Y10S236/00; Y10S236/01; Y10S236/13
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) | 1920-08-20 | 1921-02-19 | 1921-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-08-20 | 1925-02-19 | 1925-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-08-20 | 1929-02-19 | 1929-08-21 | $7700.00 | Window Closed / Lapsed |