US1276478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flap-valve for two-cylinder compressors.
Assignee: GUARDIAN FRIGERATOR Co
•
Filing: 1916-06-02
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Granted: 1918-08-20
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Expires: 1936-06-02
Abstract
No abstract record available.
Inventors
- 👤 Reuben E Bechtold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:10
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/1073; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/144; F16K15/147; F16K15/16; F16K15/162; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7843; Y10T137/7859; Y10T137/7879; Y10T137/7888; Y10T137/7891; Y10T137/7892
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) | 1921-08-19 | 1922-02-18 | 1922-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-08-19 | 1926-02-18 | 1926-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-08-19 | 1930-02-18 | 1930-08-20 | $7700.00 | Window Closed / Lapsed |