US3312271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Outside pilot arrangement
Assignee: Geo D Roper Corp
•
Filing: 1964-03-06
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Granted: 1967-04-04
•
Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Beach
- 👤 John R Fulmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:47
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/02; F24; F24C; F24C3/00; F24C3/10; F24C3/106; F24C3/12; F24C3/126; F24C3/128
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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |