US3000649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Couplings for sectional heavy duty apparatus
Assignee: Poor and Co
•
Filing: 1961-01-04
•
Granted: 1961-09-19
•
Expires: 1981-01-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Heer
- 👤 Dean T Otto
- 👤 Lloyd W Mundy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:02
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/003; A; A01; A01D; A01D67/00; A01D67/005; B; B02; B02C; B02C21/00; B02C21/02; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; B62D53/062; B62D53/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2871027A
Cited
US2952476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |