US3304750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash lamp
Assignee: General Electric Co
•
Filing: 1965-06-29
•
Granted: 1967-02-21
•
Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Robert M Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:05
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PHOTOFLASH LAMP COMPRISING A HERMETICALLY SEALED TUBULAR BULB CONTAINING IGNITION MEANS, COMBUSTIBLE MATERIAL, AND A COMBUSTION-SUPPORTING ATMOSPHERE, SAID BULB BEING CLOSED AT ONE END BY AN EXHAUST TIP, THE BULB WALL AT SAID ONE END BEING RE-ENTRANT INTO THE TUBULAR BULB TO PROVIDE A ROTROVERTED WELL, ESSENTIALLY SYMMETRICAL ABOUT THE AXIS OF THE TUBULAR BULB, WITH THE EXHAUST TIP ARISING OUTWARDLY FROM SAID WELL.
Claim 2
Dependent Claim
65 words
A PHOTOFLASH LAMP COMPRISING A HERMETICALLY SEALED TUBULAR BULB CONTAINING IGNITION MEANS, COMBUSTIBLE MATERIAL, AND A COMBUSTION-SUPPORTING ATMOSPHERE, SAID BULB BEING CLOSED AT ONE END BY AN EXHAUST TIP, THE BULB WALL AT SAID ONE END BEING RE-ENTRANT INTO THE TUBULAR BULB TO PROVIDE A ROTROVERTED WELL, ESSENTIALLY SYMMETRICAL ABOUT THE AXIS OF THE TUBULAR BULB, WITH THE EXHAUST TIP ARISING OUTWARDLY FROM SAID WELL.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |