US3455059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vault or manhole cover assembly
Assignee: Waterbury Foundry Co
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Filing: 1968-02-01
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Granted: 1969-07-15
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Expires: 1988-02-01
Abstract
No abstract record available.
Inventors
- 👤 Philip S Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:13
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/14; E02D29/1463; E05; E05D; E05D7/00; E05D7/10; E05D7/1061; E05D5/00; E05D5/10; E05D5/12; E05Y; E05Y2999/00
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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |