US2760439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorber and braking device
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-03-20
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Granted: 1956-08-28
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Expires: 1973-03-20
Abstract
No abstract record available.
Inventors
- 👤 Robert R Crookston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:11
CPC Classifications
B; B66; B66D; B66D5/00; B66D5/02; B66D5/026; F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0426; F04B1/10; F04B1/113
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |