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US2831616A
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Assignee: Wilbro Corp
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Filing: 1955-08-12
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Granted: 1958-04-22
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Expires: 1975-08-12
Abstract
No abstract record available.
Inventors
- 👤 James G Groendyk
- 👤 Geisler William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:23
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/44; B65D83/46; B65D47/00; B65D47/04; B65D47/06; B65D47/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |