Patent US2677936A successfully refreshed from Google Patents.
US2677936A
Expired / Lapsed
US
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Buffer or like energy-absorbing device
Assignee: George Turton Platts & Co
•
Filing: 1950-12-04
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Granted: 1954-05-11
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Expires: 1970-12-04
Abstract
No abstract record available.
Inventors
- 👤 Hewitt John Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:10
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/20; E02B3/26; Y; Y02; Y02A; Y02A30/00; Y02A30/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US88985A
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US169323A
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US447005A
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US620718A
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US2039151A
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US2417019A
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US2420677A
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US2438432A
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US2565756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |