Patent US1965644A successfully refreshed from Google Patents.
US1965644A
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Assignee: HARLAN W HEFFELFINGER
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Filing: 1932-04-13
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Granted: 1934-07-10
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Expires: 1952-04-13
Abstract
No abstract record available.
Inventors
- 👤 Leroy W Heffelfinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
A; A61; A61G; A61G1/00; A61G1/003; F; F16; F16B; F16B2200/00; F16B2200/67; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/51; Y10S24/52; Y10T; Y10T403/00; Y10T403/60; Y10T403/608; Y10T403/70; Y10T403/7005; Y10T403/7007; Y10T403/7075; Y10T403/7077; Y10T403/7079
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) | 1937-07-09 | 1938-01-08 | 1938-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-09 | 1942-01-08 | 1942-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-09 | 1946-01-08 | 1946-07-10 | $7700.00 | Window Closed / Lapsed |