US1790218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for winding spiral springs and inserting the wound springs in drums
Assignee: FRANK GRAVES SASH DOOR AND MIL
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Filing: 1927-01-03
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Granted: 1931-01-27
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Expires: 1947-01-03
Abstract
No abstract record available.
Inventors
- 👤 James P Appleby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
G; G04; G04D; G04D1/00; G04D1/04; G04D1/041; B; B23; B23P; B23P19/00; B23P19/04; B23P19/048; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53613; Y10T29/53626
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) | 1934-01-26 | 1934-07-28 | 1935-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-26 | 1938-07-28 | 1939-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-26 | 1942-07-28 | 1943-01-27 | $7700.00 | Window Closed / Lapsed |