Patent US2993997A successfully refreshed from Google Patents.
US2993997A
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US
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Refueling contact aid
Assignee: Robertshaw Controls Co
•
Filing: 1957-06-28
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Granted: 1961-07-25
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Expires: 1977-06-28
Abstract
No abstract record available.
Inventors
- 👤 Maynard D Mcfarlane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; B; B64; B64D; B64D39/00; F41G7/2253; F41G7/2273; F41G7/2293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2565213A
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US2651771A
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US2601327A
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US2797256A
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US2700318A
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US2824488A
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US2882783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |