Patent US2941427A successfully refreshed from Google Patents.
US2941427A
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US
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Assignee: TD Williamson Inc
•
Filing: 1959-09-10
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Granted: 1960-06-21
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Nooy Burton Ver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:32
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/04; F16L41/06; Y; Y10; Y10T; Y10T408/00; Y10T408/50; Y10T408/55; Y10T408/557; Y10T408/558; Y10T408/5583; Y10T408/5586
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US485715A
Cited
US2800812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |