US1152394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utilizing heat energy.
Assignee: HUMPHREY GAS PUMP Co
•
Filing: 1912-01-31
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Granted: 1915-09-07
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Expires: 1932-01-31
Abstract
No abstract record available.
Inventors
- 👤 William C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:51
CPC Classifications
F; F02; F02B; F02B63/00; F02B63/06
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) | 1918-09-06 | 1919-03-08 | 1919-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-09-06 | 1923-03-08 | 1923-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-09-06 | 1927-03-08 | 1927-09-07 | $7700.00 | Window Closed / Lapsed |