US2722232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: HOFFMAN SPECIALTY Mfg CORP
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Filing: 1951-08-17
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Granted: 1955-11-01
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Expires: 1971-08-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Austin O Roche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:53
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7856; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7934
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1975635A
Cited
US690046A
Cited
US1984328A
Cited
US2228241A
Cited
US2263750A
Cited
US2353161A
Cited
US2481713A
Cited
US2666614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |