Patent US5702421A successfully refreshed from Google Patents.
US1605722A
Expired / Lapsed
US
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Rocker arm for internal-combustion engines
Assignee: Individual
•
Filing: 1924-11-28
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Granted: 1926-11-02
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Expires: 1944-11-28
Abstract
No abstract record available.
Inventors
- 👤 George B Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:08
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/18; F01L1/181; F01L1/182; F01L2001/188; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-11-01 | 1930-05-03 | 1930-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-11-01 | 1934-05-03 | 1934-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-11-01 | 1938-05-03 | 1938-11-02 | $7700.00 | Window Closed / Lapsed |