Patent US2709808A successfully refreshed from Google Patents.
US2709808A
Expired / Lapsed
US
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Stapling mechanism
Assignee: RW Crabtree and Sons Ltd
•
Filing: 1952-12-30
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Granted: 1955-06-07
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Expires: 1972-12-30
Abstract
No abstract record available.
Inventors
- 👤 Murrell John Thomas
- 👤 Gladden John Alfred
- 👤 Dew Robert Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:45
CPC Classifications
B; B42; B42B; B42B4/00; B42B4/02; B27; B27F; B27F7/00; B27F7/17; B27F7/19; B27F7/21; B27F7/23; B41; B41F; B41F13/00; B41F13/54; B41F13/64; B41F13/66
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) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |