Patent US770074A successfully refreshed from Google Patents.
US770074A
Expired / Lapsed
US
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Attachment for hot-air registers.
Assignee: Individual
•
Filing: 1903-09-09
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Granted: 1904-09-13
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Expires: 1923-09-09
Abstract
No abstract record available.
Inventors
- 👤 William A Kilmer
- 👤 Melvin D Kilmer
- 👤 Minard A Possons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:09
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08
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) | 1907-09-13 | 1908-03-14 | 1908-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-09-13 | 1912-03-14 | 1912-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-09-13 | 1916-03-14 | 1916-09-13 | $7700.00 | Window Closed / Lapsed |