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Patent US2977934A successfully refreshed from Google Patents.
US2977934A
Expired / Lapsed
US
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Booster motor mechanism
Assignee: ZF Active Safety US Inc
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Filing: 1957-04-26
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Granted: 1961-04-04
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Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Pulkownik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:39
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/246; B60T13/249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2289043A
Cited
US2260490A
Cited
US2383682A
Cited
US2618123A
Cited
US2784702A
Cited
US2862477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |