US2746778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Journal box grease seal
Assignee: GRACE HURLBURT LEZER
•
Filing: 1953-04-17
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Granted: 1956-05-22
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Expires: 1973-04-17
Abstract
No abstract record available.
Inventors
- 👤 Fred F Hurlburt
- 👤 Charles H Gillispie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:21
CPC Classifications
B; B61; B61F; B61F15/00; B61F15/20; B61F15/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US404701A
Cited
US558693A
Cited
DE367771C
Cited
US1871299A
Cited
US1854708A
Cited
FR755479A
Cited
US2231690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |