US2743742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line blind
Assignee: ROBINSON ORIFICE FITTING Co
•
Filing: 1952-07-14
•
Granted: 1956-05-01
•
Expires: 1972-07-14
Abstract
No abstract record available.
Inventors
- 👤 Oliver W Muff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:38
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/312; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/53848; Y10T29/53857; Y10T29/53861
Claims Analysis
Total Claims: 0
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US1957807A
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US2014682A
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US2025545A
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US1972151A
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US1938459A
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US2098747A
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US2309304A
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US2339970A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |