US3420452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid manure spreader
Assignee: Vaughan Co Inc
•
Filing: 1966-10-06
•
Granted: 1969-01-07
•
Expires: 1986-10-06
Abstract
No abstract record available.
Inventors
- 👤 James E Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:08
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/001; A01C23/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2152259A
Cited
US2602670A
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DE927954C
Cited
US2965379A
Cited
US2959329A
Cited
FI31118A
Cited
US3159315A
Cited
US3171658A
Cited
US3322429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |