US2768431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for assembly of rods and plates
Assignee: Oxy Catalyst Inc
•
Filing: 1953-05-14
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Granted: 1956-10-30
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Expires: 1973-05-14
Abstract
No abstract record available.
Inventors
- 👤 Francis J Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:52
CPC Classifications
B; B01; B01J; B01J12/00; B01J12/007; B01J15/00; B01J15/005; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/32275; B01J2219/32282; B01J2219/32286; B01J2219/324; B01J2219/32425; B01J2219/32466; Y; Y10; Y10S; Y10S29/00; Y10S29/046; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49826; Y10T29/49904; Y10T29/53; Y10T29/53535; Y10T29/53961; Y10T29/53965
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1339434A
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US1673943A
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US2157709A
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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) | 1959-10-30 | 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 |