Patent US3271938A successfully refreshed from Google Patents.
US3271938A
Expired / Lapsed
US
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Breather cap and dipstick combination for an oil filler pipe
Assignee: Allen Electric and Equipment Co
•
Filing: 1963-06-05
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Granted: 1966-09-13
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Expires: 1983-06-05
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Rest
- 👤 David R Newsted
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:54
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/04; F; F01; F01M; F01M13/00; F01M13/0033
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |