US2728412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor oiling system
Assignee: Hartford National Bank and Trust Co
•
Filing: 1950-07-15
•
Granted: 1955-12-27
•
Expires: 1970-07-15
Abstract
No abstract record available.
Inventors
- 👤 Bolsius Johannes Const Clemens
- 👤 Stege Willem Cornelis Ter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:10
CPC Classifications
F; F01; F01M; F01M1/00; F01M1/04; F16; F16N; F16N7/00; F16N7/30; F16N7/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190422059A
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US797046A
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US904132A
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US1094431A
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US1053939A
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GB191222346A
Cited
US1091249A
Cited
US1144101A
Cited
US1354663A
Cited
US2316000A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |