Patent US1029232A successfully refreshed from Google Patents.
US1029232A
Expired / Lapsed
US
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Air-pump.
Assignee: Individual
•
Filing: 1911-10-24
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Granted: 1912-06-11
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Expires: 1931-10-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Schaefer
- 👤 Emil Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:03
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1202; A47K5/1204
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) | 1915-06-11 | 1915-12-11 | 1916-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1919-06-11 | 1919-12-11 | 1920-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1923-06-11 | 1923-12-11 | 1924-06-11 | $7700.00 | Window Closed / Lapsed |