Patent US3254399A successfully refreshed from Google Patents.
US3254399A
Expired / Lapsed
US
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Bulkhead support and fastening means
Assignee: Crawford Fitting Co
•
Filing: 1962-11-23
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Granted: 1966-06-07
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Emery J Zahuranec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:24
CPC Classifications
F; F16; F16L; F16L5/00; F16L5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49764; Y10T29/49778; Y10T29/49826; Y10T29/49895
Claims Analysis
Total Claims: 0
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US2727709A
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US2934359A
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US2986409A
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US3104120A
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |