US1644231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: HARRY J BOSWORTH CO
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Filing: 1924-07-21
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Granted: 1927-10-04
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Expires: 1944-07-21
Abstract
No abstract record available.
Inventors
- 👤 Harry J Bosworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/06; A61B1/0661; A61B1/0669; F; F21; F21V; F21V21/00; F21V21/14; F21V21/26
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) | 1930-10-03 | 1931-04-04 | 1931-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-03 | 1935-04-04 | 1935-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-03 | 1939-04-04 | 1939-10-04 | $7700.00 | Window Closed / Lapsed |