US3493153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backpack carrier
Assignee: National Aeronautics and Space Administration
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Filing: 1967-10-10
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Granted: 1970-02-03
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Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 Amos A Spady Jr
- 👤 Frank G Read
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:19
CPC Classifications
B; B64; B64G; B64G4/00; A; A45; A45F; A45F3/00; A45F3/04; A45F3/08; A61; A61G; A61G1/00; A61G1/02; A61G1/0206; A61G1/0225; A61G1/0231; B64G1/00; B64G1/16; A61G2220/00; A61G2220/10
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) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |