Patent US1502736A successfully refreshed from Google Patents.
US1502736A
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US
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Valve mechanism
Assignee: Kelvinator Inc
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Filing: 1923-04-11
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Granted: 1924-07-29
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Expires: 1943-04-11
Abstract
No abstract record available.
Inventors
- 👤 William D Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:30
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/1013; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K47/00; F16K47/01; F16K47/011; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7852; Y10T137/7904; Y10T137/7922; Y10T137/7929
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) | 1927-07-29 | 1928-01-28 | 1928-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-07-29 | 1932-01-28 | 1932-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-07-29 | 1936-01-28 | 1936-07-29 | $7700.00 | Window Closed / Lapsed |