US1813273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction and method for making the same
Assignee: METALCRAFT HEATER Corp
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Filing: 1927-06-27
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Granted: 1931-07-07
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Expires: 1947-06-27
Abstract
No abstract record available.
Inventors
- 👤 Sidney J V Bovey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:05
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/033; Y; Y10; Y10T; Y10T137/00; Y10T137/794; Y10T137/8013; Y10T137/8593; Y10T137/86493; Y10T137/86847; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49409; Y10T29/49412; Y10T29/49416; Y10T29/49421
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) | 1934-07-06 | 1935-01-05 | 1935-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-07-06 | 1939-01-05 | 1939-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-07-06 | 1943-01-05 | 1943-07-07 | $7700.00 | Window Closed / Lapsed |