US2909312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: WALWORTH ENGINEERING Co
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Filing: 1956-10-09
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Granted: 1959-10-20
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Expires: 1976-10-09
Abstract
No abstract record available.
Inventors
- 👤 James E Conerty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/54; B65D5/5445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US900953A
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US1724224A
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US2348377A
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US2370079A
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US2699286A
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DE846670C
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US2751964A
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US2808190A
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US2771385A
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |