Patent US1926450A successfully refreshed from Google Patents.
US1926450A
Expired / Lapsed
US
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Loose stem split rotor and lubricated valve
Assignee: Lunkenheimer Co
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Filing: 1930-06-23
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Granted: 1933-09-12
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Expires: 1950-06-23
Abstract
No abstract record available.
Inventors
- 👤 Halbert P Macgregor
- 👤 Frederick H Hehemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/225; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4435; Y10T137/8158; Y10T137/8225; Y10T137/8275
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) | 1936-09-11 | 1937-03-13 | 1937-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-09-11 | 1941-03-13 | 1941-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-09-11 | 1945-03-13 | 1945-09-12 | $7700.00 | Window Closed / Lapsed |