Patent US2730704A successfully refreshed from Google Patents.
US2768643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator for oxygen and other gases
Assignee: Union Carbide Corp
•
Filing: 1951-06-14
•
Granted: 1956-10-30
•
Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Byron H Acomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:26
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0663; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826; Y10T137/794; Y10T137/8122; Y10T137/8158; Y10T137/8175
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1079600A
Cited
US1225084A
Cited
FR534842A
Cited
FR552052A
Cited
US2095210A
Cited
US1746220A
Cited
US1972748A
Cited
US2057150A
Cited
US2161544A
Cited
US2080666A
Cited
US2272243A
Cited
US2178444A
Cited
US2237554A
Cited
US2300498A
Cited
US2478040A
Cited
US2558651A
Cited
US2641278A
Cited
US2536505A
Cited
US2595012A
Cited
US2595156A
Cited
US2664672A
Cited
US2682638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |