US2767694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine head construction
Assignee: Bank of America Corp
•
Filing: 1953-05-22
•
Granted: 1956-10-23
•
Expires: 1973-05-22
Abstract
No abstract record available.
Inventors
- 👤 Boghossian Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:09
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/38; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; F01L1/053; F01L1/0532; F02B; F02B1/00; F02B1/02; F02B1/04; F02B2275/00; F02B2275/20; F02F2001/244; F02F2001/245; F02F2001/247; F02F2200/00; F02F2200/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US660073A
Cited
US2029602A
Cited
US2182890A
Cited
US2622579A
Cited
US2533442A
Cited
US2632432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |