Patent US2970440A successfully refreshed from Google Patents.
US2970440A
Expired / Lapsed
US
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Starting system for engines
Assignee: RTX Corp
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Filing: 1958-09-02
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Granted: 1961-02-07
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 George A Dmitroff
- 👤 Jr Edgar Robitaille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:37
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/26; F02C7/268; F02C7/27; B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; F02C7/275; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1787781A
Cited
US1816829A
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US2145533A
Cited
US2873577A
Cited
US2793498A
Cited
US2846850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-07 | 1964-08-08 | 1965-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-07 | 1968-08-08 | 1969-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-07 | 1972-08-08 | 1973-02-07 | $7700.00 | Window Closed / Lapsed |