Patent US3508463A successfully refreshed from Google Patents.
US3508463A
Expired / Lapsed
US
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Rail trimming apparatus
Assignee: Chemetron Corp
•
Filing: 1966-08-30
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Granted: 1970-04-28
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Expires: 1986-08-30
Abstract
No abstract record available.
Inventors
- 👤 George L Hammon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
B; B23; B23D; B23D1/00; Y; Y10; Y10S; Y10S83/00; Y10S83/914; Y10T; Y10T409/00; Y10T409/40; Y10T409/402625; Y10T409/4035; Y10T409/404375; Y10T409/40455; Y10T409/4056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1318102A
Cited
US1977556A
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US3227851A
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US3081673A
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US3110227A
Cited
FR1374279A
Cited
US3230832A
Cited
US3336839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-27 | 1973-10-27 | 1974-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-27 | 1977-10-27 | 1978-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-27 | 1981-10-27 | 1982-04-28 | $7700.00 | Window Closed / Lapsed |