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US2535403A
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Appliance for dual heading of hollow rivets
Assignee: Individual
•
Filing: 1947-07-23
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Granted: 1950-12-26
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Expires: 1967-07-23
Abstract
No abstract record available.
Inventors
- 👤 Robert E Froggatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:18
CPC Classifications
B; B21; B21J; B21J15/00; B21J15/38; B21J15/386; B21D; B21D39/00; B21D39/06; B21J15/02; B21J15/04; B21J15/043; F; F16; F16B; F16B19/00; F16B19/04; F16B19/08; F16B19/10; F16B19/1027; F16B19/1036; F16B19/1045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938; Y10T29/49943; Y10T29/53; Y10T29/53709; Y10T29/53717; Y10T29/53722
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |