US2833556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weight transfer system and apparatus for tractor-trailers
Assignee: Athey Products Corp
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Filing: 1957-01-30
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Granted: 1958-05-06
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Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 Robert W Kling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:56
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/068; B62D53/08; B62D53/0857; E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/6454; E02F3/6463; E02F3/65; E02F3/652; E02F3/653; E02F9/00; E02F9/02
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |