Patent US987938A successfully refreshed from Google Patents.
US987938A
Expired / Lapsed
US
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Heat-actuated gas-pump.
Assignee: Individual
•
Filing: 1909-02-25
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Granted: 1911-03-28
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Expires: 1929-02-25
Abstract
No abstract record available.
Inventors
- 👤 Charles A Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:17
CPC Classifications
F; F04; F04B; F04B19/00; F04B19/006
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) | 1914-03-27 | 1914-09-26 | 1915-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1918-03-27 | 1918-09-26 | 1919-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1922-03-27 | 1922-09-26 | 1923-03-28 | $7700.00 | Window Closed / Lapsed |