Patent US2131749A successfully refreshed from Google Patents.
US2131749A
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Assignee: Homestead Valve Manufacturing Co
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Filing: 1936-06-29
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Granted: 1938-10-04
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Expires: 1956-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frank W Ofeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:29
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/0042; F04B7/0053; F04B1/00; F04B15/00; F04B15/02; F04B49/00; F04B49/22; F04B49/24; F04B49/243; F04B53/00; F04B53/16; F04B53/162; F04B53/164
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) | 1941-10-03 | 1942-04-04 | 1942-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-03 | 1946-04-04 | 1946-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-03 | 1950-04-04 | 1950-10-04 | $7700.00 | Window Closed / Lapsed |