Patent US1231561A successfully refreshed from Google Patents.
US1231561A
Expired / Lapsed
US
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Suction-controlled switch.
Assignee: Briggs and Stratton Corp
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Filing: 1915-06-28
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Granted: 1917-07-03
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Expires: 1935-06-28
Abstract
No abstract record available.
Inventors
- 👤 Stephen F Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:10
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34
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) | 1920-07-02 | 1921-01-01 | 1921-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-02 | 1925-01-01 | 1925-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-02 | 1929-01-01 | 1929-07-03 | $7700.00 | Window Closed / Lapsed |