Patent US2904800A successfully refreshed from Google Patents.
US2904800A
Expired / Lapsed
US
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Method of making insulated coupling nuts for pipe unions
Assignee: Universal Controls Corp
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Filing: 1953-10-22
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Granted: 1959-09-22
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Expires: 1973-10-22
Abstract
No abstract record available.
Inventors
- 👤 Charles D Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:32
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64; B29; B29D; B29D1/00; F; F16; F16B; F16B33/00; F16B33/004; F16B37/00; F16B37/04; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US248975A
Cited
US262193A
Cited
US549510A
Cited
US680991A
Cited
US923164A
Cited
US1088437A
Cited
US1244100A
Cited
US1299415A
Cited
US1977861A
Cited
US2131319A
Cited
US2026859A
Cited
DE868688C
Cited
US2391643A
Cited
US2437843A
Cited
US2569333A
Cited
US2726101A
Cited
US2723699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |