US1235344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust-valve for combustion-engines.
Assignee: Individual
•
Filing: 1916-07-01
•
Granted: 1917-07-31
•
Expires: 1936-07-01
Abstract
No abstract record available.
Inventors
- 👤 Henry C Lindemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:06
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/10; F16K41/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49314
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) | 1920-07-30 | 1921-01-29 | 1921-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-30 | 1925-01-29 | 1925-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-30 | 1929-01-29 | 1929-07-31 | $7700.00 | Window Closed / Lapsed |